Friday

April 18, 2014

April 18, 2014

Number of results: 98,299

**Mathematics-please help quick!!**

The lenght of a rectangle is 10cm greater than its width. The perimeter of the rectangle is 1m. A.Find the simplest expression for the perimeter for the rectangle if the width is x.B. Find the width of the rectangle. C. Calculate the area of the rectangle. Answers: A=20+x .B=...
*Sunday, June 10, 2012 at 4:06am by Scraffii*

**Mathematics-please help quick!!**

The lenght of a rectangle is 10cm greater than its width. The perimeter of the rectangle is 1m. A.Find the simplest expression for the perimeter for the rectangle if the width is x.B. Find the width of the rectangle. C. Calculate the area of the rectangle. Answers: A=20+x .B=...
*Sunday, June 10, 2012 at 4:13am by Scraffii*

**math**

If 203n + 2m4n = 501n. a. Find the value of base n. b. Find the value of m PS the 'n' is really base n.
*Monday, December 16, 2013 at 2:58pm by Lindsay*

**math**

The width of a rectangle is 2 inches shorter than the length and the perimeter is 80. Set up an equation for the perimeter involving only L, the length.Find the width as well.
*Thursday, July 24, 2008 at 9:11pm by Bernadine*

**math**

You're finding the area, not the perimeter. The perimeter = 2 times the length + 2 times the width 36 = (2 * 3) + (2 * 15) 36 = (2 * 4) + (2 * 14) How many more like that can you find?
*Wednesday, July 31, 2013 at 6:38pm by Ms. Sue*

**math**

.the perimeter of a rectangle is 30 m more than three times its width. if the perimeter is 84 m, find the length and width of the rectangle.
*Saturday, January 15, 2011 at 8:43am by mae*

**math**

lateral surface is perimeter*height. a hexagon's perimeter with a side of 8 inches= 48. to find the lateral area do 48*6.
*Tuesday, March 27, 2012 at 4:39pm by SoccerStar*

**maths**

The length of a rectangle is 10cm greater than its width. The perimeter of the rectangle is 1m. Find the simplest expression for the perimeter if the width is x.
*Sunday, September 1, 2013 at 2:26am by Shane*

**5th grade math**

isosceles and equilateral triangles are different because, isosceles --> only two sides are of equal length, equilateral --> all three sides are equal isosceles and equilateral triangles both have three sides. (one characteristic they both have) so there,, :)
*Thursday, October 28, 2010 at 8:43am by jai*

**begining algebra**

One side of a triangle is three times the shortest side. The third side is 7 feet more than the shortest side. The perimeter is 62 feet. Find all three sides.
*Wednesday, February 10, 2010 at 9:19pm by D*

**alegbra**

one side of a triangle is three time the shortest side. The third side is 7 feet more than the shortest side. The perimeter is 62 feet. Find all three sides.
*Wednesday, October 20, 2010 at 10:14pm by Kim*

**math**

how can you find the length of a line of a isosceles trapezoid?
*Friday, April 10, 2009 at 10:11pm by frank*

**math**

A flower bed is in the shape of a triangle with one side twice the length of the shortest side, and the third side is 19 feet more than the length of the shortest side. Find the dimensions if the perimeter is 143 feet.
*Sunday, January 22, 2012 at 1:07pm by Tarisha*

**math **

triangle ABC is similar to triangle EFG. find the value of X
*Tuesday, December 7, 2010 at 10:02am by karinna solares*

**geometry**

find the measures of each side of triangle abc with vertices a(-1,5), b(6,1), c(2,6) and classify the triangle.
*Saturday, February 19, 2011 at 6:28pm by Tori*

**Math**

"The height of each triangles is 12 inches . . ." Do you mean the height of ONE triangle is 12 inches? The base and height of one triangle are 9 and 12 inches. 9 * 12 = 108 1/2 * 108 = 54 square inches Now, do the same math for the other triangle and add the two together. We'...
*Tuesday, April 28, 2009 at 7:10pm by Ms. Sue*

**math**

The perimeter of the office bulletin board is 24 ft. The perimeter of the sandbox is 1 1/2 times as long. What is the perimeter of the sandbox?
*Friday, December 14, 2012 at 2:10am by K*

**calculus**

let L = length of equal legs let x = base lenth let altitude = h then h^2 + (x/2)^2 = L^2 h = sqrt(L^2 - .25 x^2) area = 100 = (1/2)xh = (1/2)x sqrt(L^2-.25x^2) perimeter = 2L + x d perimeter/dx = 0 = 2 dL/dx + 1 for min or max so when dL/dx = -1/2 but d/dx 100 = 0 so 0 = x d/...
*Thursday, December 9, 2010 at 5:36pm by Damon*

**area, perimeter**

the perimeter of rectangle y is equal to its area. rectangle z has the same perimeter as rectangle y. the length of rectangle z is 5 inches and the width is 3 inches. explain how you can find the length and eidth of rectangle y.
*Monday, April 4, 2011 at 7:14pm by susie*

**Algebra I**

The expression 2(l+w) may be used to find the perimeter of a rectangle. What are the length and width of a rectangle if the area is 13 1/2 square units and the length of one side is 1/5 the measure of the perimeter?
*Sunday, August 29, 2010 at 11:47pm by Dev*

**GEOMETRY**

draw the figure. Draw the diagonol. Notice that 5 is the overlap on each end of the base from the upper base downward. Now look at the right triangle 12-11-h (the 11 is 16-5). 12^2=11^2+h^2 solve for h.
*Saturday, April 3, 2010 at 9:02am by bobpursley*

**Math**

A triangle has sides 3x + 7, 4x – 9, and 5x + 6. Find the equation that represents its perimeter I believe you put each equation which represents a side in parenthesis: (3x + 7) + (4x – 9) + (5x + 6)
*Thursday, February 22, 2007 at 12:11am by Aimee*

**college**

One side of a triangle is three times the shortest side. The third side is 7 feet more than the shortest side. The perimeter is 62 feet. Find all three sides.
*Wednesday, February 10, 2010 at 9:09pm by D*

**Math Question**

Which one of the following pairs of triangle must be similar? a) two isosceles triangles with congruent vertex angles b) two right triangles c) two scalene triangles with congruent bases d) two obtuse triangles a) if the two vertex angles are the same then the other two angles...
*Sunday, March 4, 2007 at 3:18pm by Becky*

**ADVANCED AMC8 GEOMETRY QUESTION/MATH**

Note that an equilateral triangle is a triangle where all lengths of the sides are equal. If you revolve the triangle about its altitude (or the height), you'll generate a cone (just try to imagine or draw the figure). Therefore, the height of the cone is equal to the height ...
*Friday, August 9, 2013 at 11:59am by Jai*

**Calculus**

draw a radius from the centre to a vertex of the rectangle Let the base of the rectangle be 2x, making the triangle base x, and let the height of the rectangle by y Area of rectangle = 2xy but x^2 + y^2 = 4 y = √(4 - x^2) or (4-x^2)^(1/2) A = 2x(4-x^2)^(1/2) take the ...
*Tuesday, March 9, 2010 at 10:25pm by Reiny*

**Math- HELP**

There is a triangle inside of a circle. I have to find area of the shaded region which is the circle. So i would have to substract the area of the triangle from the area of the circle. the radius of the circle is 3 inches. I found the area of the circle..it is 28.27 in.^2 I am...
*Thursday, December 2, 2010 at 5:56pm by MK*

**geometry**

Suppose the dimensions of a rectangle with a perimeter of 22 inches are tripled. Find the perimeter of the new rectangle in inches.
*Wednesday, March 9, 2011 at 8:04pm by avril*

**Math**

Assume we are taking a side view, draw a straight line, label the left end A and the right end B Place a point between them to represent the tower, and give it some height. Join both A and B to the top of the tower You now have 2 right-angled triangles. where the base angle at...
*Sunday, July 21, 2013 at 10:26pm by Reiny*

**Geometry**

BD is a perpendicular bisector of triangle ABC. XZ is a perpendicular bisector of triangle WXY. Triangle ABC is similar to triangle WXY with a scale factor of 1:3. Part I. Find BD, AB, WZ, XZ and WX. Part II. What is the scale factor of the perimeters of triangle ABC and ...
*Tuesday, April 6, 2010 at 5:19pm by Jenna*

**Math**

# 1 if the area of the parallelogram is 39cm2, what is its base? ____cm # 2 if the base of the triangle is 2 times its height, what is its area? ____cm need help
*Tuesday, March 6, 2012 at 11:05pm by i need help!*

**math**

Find the perimeter and area of a right triangle if one leg measures 9 cm and the other leg measures 40 cm. Students must show all work step by step to receive full credit for the problem. Include correct units with your solution.
*Sunday, October 9, 2011 at 11:56pm by joetta*

**Math**

Don't understand the problem can somebody please help me The bottom of the rabbit cage is a rectangle with a perimeter of 118 inches. Let x be the cages width(in inches) and let y be its length (in inches). write an equation for the perimeter the find the intercepts
*Sunday, November 11, 2012 at 4:05pm by Kim*

**Polyhedren Question, pls help asap!!!!!**

ok, i really dont know this one and i cant post the pic of the triangle, so im gonna go to extremes here if u want to find the pic. I think it is a triangular prism though... 1. What is the shape of the bases for the following polyhedron? (triangle prism, if you research this ...
*Monday, February 17, 2014 at 1:00pm by TTR+S<3*

**geometry**

How do you find the slope-intercept equation of medians of a triangle and perpendicular bisectors of a triangle?
*Sunday, May 22, 2011 at 6:26pm by Jasmine*

**math**

one side of an equilateral triangle is 42cm.find the length of an altitude of the triangle.
*Saturday, April 28, 2012 at 11:07am by lisa*

**geometry**

Each side of a equilateral triangle measures 12 cm. Find the height, h of the triangle.
*Monday, October 15, 2012 at 3:51pm by Louise*

**math**

How do I find the 3rd side of a triangle if I am given 2 sides and there is no mention if it is a right triangle?
*Sunday, January 5, 2014 at 6:29pm by CC*

**math**

A triangle has a base of 7 ft. and an altitude of 15 ft. Find its area to the nearest tenth. Choose the best answer from the options below: A 52.5 ft² B 53.5 ft² C 54.5 ft² D 55.5 ft²
*Saturday, May 21, 2011 at 12:59pm by makeeda*

**math**

The sides of a right angled triangle are x,x+1 and x+2.find x,Am not gettin the right answer. Being a right triangle, x^2 + (x + 1)^2 = (x + 2)^2. Expanding and simplifying, yields x^2 -- 2x - 3 = 0. Factoring or the quadratic equation will lead you to the smallest Pythagorean...
*Tuesday, June 26, 2007 at 9:25am by SWETA*

**College Calculus**

Find the volume of the solid with given base and cross sections. The base is the unit circle x^2+y^2=1 and the cross sections perpendicular to the x-axis are triangles whose height and base are equal.
*Thursday, February 9, 2012 at 6:56pm by Anonymous*

**math**

A cone is a 3-dimensional shape; the 3-dimensional equivalent of perimeter is area. To find the perimeter of a 3D shape you simple measure all the sides than add the measurement together
*Sunday, May 30, 2010 at 10:44pm by Felicia*

**trig**

Find all solutions to the following triangle. (Round your answers for angles A, B, A', and B' to the nearest minute. Round your answers for sides a and a' to the nearest whole number. If either triangle is not possible, enter NONE in each corresponding answer blank.) C = 23¡ã ...
*Friday, November 16, 2012 at 6:29am by janice*

**geometry**

Open that link please please help me with my assignments 1. in the figure , the areas of traingle cef, triangle abe, triangle adf are 3,4, and 5 respectively. find the area of triangle aef 2. equialateral triangle abc has an area of square root of 3 and side of length 2. point...
*Thursday, November 7, 2013 at 8:17am by BARBIE LEE *

**pre algebra**

the midpoints of each side of triangle NOT are connected to make a smaller triangle inside triangle NOT. If the area of triangle NOT is 16 in squared, what is the area of the smaller triangle?
*Thursday, January 13, 2011 at 5:58pm by jen*

**Geometry**

for right-angled, is 81^2 = 80^2 + 18^2 ?? for obtuse angle, 81^2 > 80^2 + 18^2 notice two sides are almost equal, so it will look like an isosceles triangle
*Friday, January 20, 2012 at 6:12pm by Reiny*

**calculus**

27 ft of wire is to be used to form an isosceles right triangle and a circle. Determine how much of the wire should be used for the circle if the total area enclosed is to be a minimum? Maximum?
*Monday, November 11, 2013 at 4:34pm by Heidi*

**geometry**

draw the diagonal to show the right-angled triangle, the hypotenuse of that using Pythagoras is 10 so the area of the right_angled triangle is (1/2)(6)(8) = 24 for the other triangle with sides, 10, 11, and 12 use Heron's formula Area = √(s(s-a)(s-b)(s-c)) where s = (1/2...
*Wednesday, June 22, 2011 at 9:58am by Reiny*

**Math**

Rachel: 12. Perimeter means to "walk around" the entire object. If the side of an equilateral triangle is 4, so are the other 2 sides (4 + 4 + 4).
*Wednesday, March 24, 2010 at 6:39pm by Jen*

**college algebra**

Each of the cut-off corners would be an isosceles right-angled triangle. The stop sign will be an octagon with each side equal to x. Consider one of the triangles, the hypotenuse will be x. by Pythagoras you can show that each of the equal sides must be x/√2 each side of...
*Tuesday, April 26, 2011 at 8:40pm by Reiny*

**Math**

Make a sketch to see that you have a triangle Find the intersection of the two non-vertical lines 1/4 x = - 1/2 x + 6 times 4 x = -2x + 24 3x = 24 x = 8 so we could consider the length along the y-axis as the base, and then the height would be 8 area = (1/2)(6)(8) = 24
*Tuesday, July 24, 2012 at 4:44pm by Reiny*

**Check my precalc**

1. find without a calc log base 5 of cubed root of 25. I got x=(2/3) 2. ln base e of 3 I got 3 3. find the domain of y= log base 3 of (x/x-1) I got (negative infinity, 0)union (1, infinity) 4. y= (1/ln x) find the domain i got ( negative infinity, 1) but im pretty sure thats ...
*Thursday, November 15, 2012 at 8:52pm by Rebekah*

**math**

It is not too clear what your question is about. If it is about a triangle with Area = A, base=b and height=h, then the height h can be found from the formula: Area of triangle = (1/2)bh or h=2A/b. However, the figure could be a parallelogram, a retangle, etc. in which case ...
*Tuesday, March 15, 2011 at 9:45pm by MathMate*

**math**

The two equal base angles are (1/2)(180-35) = 72.5 degrees. Consider the right triangle formed by the midpoint of the base, the tip of the pennant, and one long side. Let the long side length be x. 10/x = cos 72.5 = 0.301 Solve for x
*Saturday, May 17, 2008 at 3:51am by drwls*

**Algebra 1**

First, calcuate the base of triangle C, wouldn't it be 5/6 of 6.72in? Now, the altitude of C must be the area/base. Now, the altitude of D must be 6/5 of the altitude of C. Neat.
*Wednesday, November 7, 2007 at 8:08pm by bobpursley*

**Math**

Triangle Lmn is similar to triangle xyz. Triangle LMN has a side of 5 and 3. The scale factor of triangle Lmn to triangle xyz is 2:5. What is triangle xyz's length? Helppppp Meeeeeeeeeee!!!
*Tuesday, April 2, 2013 at 10:21pm by Bre*

**Math**

The three lines x-y+1=0 ,2x+y-4=0 ,and x+y+5=0 intersect to form a triangle. Find the coordinates of the vertices of the triangle.
*Sunday, September 9, 2012 at 9:58am by Vanessa*

**maths- **

Find the area of triangle . in a right-angled triangle, the length of the hypotenuse is 65 cm
*Friday, April 5, 2013 at 9:58am by anoynomous*

**Maths**

A square has an area of S^2 and a regular hexagon has a perimeter of T. If p is the perimeter of the square and h is a side of the hexagon, then find h+p in terms of S and T.
*Saturday, June 19, 2010 at 9:09am by Mark*

**Trig**

ok, follow my steps above you now have a right-angled triangle with a height of h sin R = h/PR = h/q h = qsin R Isn't the area of the triangle (1/2)(base)h = (1/2)QRh = (1/2)p(qsin R) = (1/2)pq sin R as requested. dropping perpendiculars from R and Q you can prove in the same ...
*Monday, April 12, 2010 at 7:21pm by Reiny*

**Algebra**

Rose wants to plant a garden. She made an outline in her yard of a regular octagon with each side 8 feet long. Rose also divided the garden into sections as shown. In each triangle and square, she planted flowers. In three of the rectangles, she planted vegetables. a.What can ...
*Tuesday, March 11, 2008 at 9:06pm by Bretagne*

**Geometry**

right triangle 3^2 + 4^2 = 5^2 so (1/2) base* altitude = (1/2)(4)(3) = 6
*Saturday, March 19, 2011 at 5:58pm by Damon*

**math**

area of triangle with base of 1 3/4 and height of 4/5
*Friday, March 9, 2012 at 2:48pm by scott*

**Calculus**

Did you make a sketch ? The parabola is y = -(1/6)x^2 + 8 or -x^2/6 + 8 Let P(x,y) and Q(-x,y) be the base of the triangle, both P and Q on the parabola in the first and second quadrants. The the area of the triangle is A = (1/2)(2x)(y) = xy = x(-x^2/6 + 8) = -x^3/6 + 8x d(A)/...
*Saturday, March 20, 2010 at 8:08pm by Reiny*

**geometry**

DEFG is an isosceles trapezoid. Find the measure of <E.
*Thursday, October 20, 2011 at 7:00pm by Marcus*

**Geometry**

Abcd is an isosceles trapezoid with a(10,-1) b(8,3) and c(-1,3). Find the coordinates of d
*Friday, March 22, 2013 at 12:04am by Alice*

**MATH **

FIND A PERIMETER OF A TRIANGLE WHERE ONE SIDE IS 2 INCHES, ONE SIDE IS 6 INCHES, ANOTHER SIDE IS 10 INCHES???
*Friday, July 15, 2011 at 7:03pm by SANDY*

**geometry**

Draw a cross section and you will have a right-angled triangle. find the missing side which will be the radius of the base of the cone , r should be 9 in You should have formulas for the surface area of a cone.
*Thursday, May 12, 2011 at 6:29am by Reiny*

**geometry**

the exterior angle 120degre and one interior angle 45degre of each triangle are given.find the other interior opposite angle and the third angle of each triangle.
*Friday, January 28, 2011 at 12:36am by properties of triangle*

**math-triangle help**

I need help with this: Given a right triangle with B=4 and C=11 find A appoximated to three decimal places.
*Tuesday, November 20, 2007 at 8:55pm by JerriAnne*

**geo (finals)**

please help! i dont get these problems at all! a(4,3) b(7,4) and c(5,2) are midpoints of a triangle. find the coordinates for the vertices of the triangle!
*Monday, December 13, 2010 at 10:08pm by Skylar*

**Math**

In Triangle XYZ, what is the cosine ratio of <X? (Hint: Find the length of XY) The Numbers In The Triangle Are 7.5 & 6
*Sunday, March 4, 2012 at 7:58pm by Valentino*

**Geometry**

Find the value of x and y in a right triangle. The hypotenuse has a length of 12 and 6. Y is on the leg and x is in the inside of the triangle on the altitude.
*Tuesday, April 3, 2012 at 6:34pm by Cassie*

**math**

The lengths of the three sides of a triangle are in the ratio 4:5:3. Find the length of each side if the perimetre of the triangle is 1.08?
*Sunday, February 17, 2013 at 8:39am by help here*

**math**

The lengths of the three sides of a triangle are in the ratio 4:5:3. Find the length of each side if the perimetre of the triangle is 1.08?
*Sunday, February 17, 2013 at 8:39am by help here*

**trig**

Find all solutions to the following triangle. (Round your answers for angles A, C, A', and C' to the nearest minute. Round your answers for sides a and a' to two decimal places. If either triangle is not possible, enter NONE in each corresponding answer blank.) B = 65¡ã 50', b...
*Friday, November 16, 2012 at 6:29am by janice*

**Areas and volumes**

A regular pyramid is inscribed in a right circular cylinder. The base of the pyramid is an equilateral triangle, and the height of the cylinder is 5 ft. If one side of the base of the pyramid measures 6 ft, what is the volume of the pyramid?
*Thursday, June 3, 2010 at 12:48pm by Ariel*

**geometry**

A = (b/2) *h, Multiply the base by 2 and get: A = b*h, So the area is doubled. Let's calculate the area of the given triangle. A(1,1), B(9,1), C(5,5). AB = 9 - 1 = 8 = base. (AC)^2 = (5-1)^2 + (5-1)^2, (AC)^2 = 16 + 16 = 32, AC = sqrt32 = 5.66. (b/2)^2 + h^2 = (AC)^2, 4^2 + h^...
*Wednesday, March 9, 2011 at 8:10pm by Henry*

**algebra**

Let the height be x cm so the base is x+4 cm Area of triangle = (1/2)base x height so 48 = (1/2)(x)(x+4) 96 = x^2 + 4x x^2 + 4x - 96 = 0 Can you solve this quadratic? Hint: it factors quite nicely
*Sunday, October 5, 2008 at 9:47pm by Reiny*

**Trigonometry**

Surveying A surveyor wishes to find the distance across a swamp. The bearing from A to B (Segment AB is opposite side of triangle) is N 32° W. The surveyor walks 50 meters from A to C, and at the point C the bearing to B is N 68° W. (Segment AC is adjacent side of triangle & ...
*Monday, February 4, 2013 at 9:58pm by AwesomeGuy*

**MATH**

The centers are at (3,5) and at (7,5) along the horizontal line y = 5 and 7-3 = 4 apart left radius = 5 right radius = 3 so the points lie on vertical line x = something an equal distance above and below y = 5 so triangle base = 4 along y = 5 line left leg = 5 right leg = 3 ...
*Friday, April 25, 2008 at 2:54pm by Damon*

**Math**

The law of sines says that the ratio of the common bisector line to the sine of the unbisected side angles must be the same. Therefore the two side angles must be equal. That makes the triangle isosceles.
*Saturday, August 20, 2011 at 7:37am by drwls*

**Math**

An isosceles triangle has an area of 24 cm squared, and the angle between the two equal sides is 5 pi/6. What is the length of the two equal sides? I can't figure out how to set up this problem please help! Thank you!
*Monday, January 20, 2014 at 5:57pm by Cassie*

**Trig**

If I have a triangle with the hypotenuse side as 7, and the opposite side as 3, how would I find the angle? (This is a right triangle.) ......III .....IIII .7..IIIII ...IIIIII..3 ..IIIIIII _IIIIIIII<--90 degrees Find this angle
*Tuesday, March 23, 2010 at 8:25am by Jill*

**MATHS,7TH CLASS**

A RIGHT ANGLED TRIANGLE ABC IS GIVEN,WHERE AB IS 5CM,AC IS 12CM,BC IS 13CM,AD IS AN ALTITUDE FROM A TO BC,FIND THE AREA OF THE TRIANGLE AND FIND AD ALSO.
*Saturday, February 19, 2011 at 9:18am by ANNANYA*

**trgonometry**

Did you make a diagram? You can find every possible angle in both triangles, one is right angled. Start with the right-angled triangle and find its hypotenuse. Then use the Sine Law in the next triangle.
*Tuesday, July 12, 2011 at 10:22am by Reiny*

**MATH**

THREE PAINTINGS ARE SHAPED LIKE AN 8 FOOT SQUARE A 7 FOOT BY 4 FOOT RECTANGLE AND A TRIANGLE AND A TRIANGLE WITH A 6 FOOT BASE AND A HEIGHT OF 7 FEET IF THOSE PAINTING ARE HUNG TOGETHER ON THE OUTSIDE OF THE BUILDING, HOW MUCH OF THE BUILDING WALL WILL THEY COVER ALL TOGETHER?
*Tuesday, March 22, 2011 at 5:20pm by CINDY*

**geometry**

Make a sketch, marking all the given data join BD since AB = AD = 4, the triangle is isosceles, furthermore it is easy to see that it must be equilateral, all angles are 60° and BD = 4 By alternate angles , angle BDC = 60° leaving angle CBD = 75° Using the sine law, BC/sin60...
*Friday, February 3, 2012 at 7:28pm by Reiny*

**geometry**

Make a diagram, then notice that you have a right-angled triangle with height=5, hypotenuse=13 and base b so b^2 + 5^2 = 13^2 b^2 + 25 = 169 b^2 = 144 b= √144 b = 12 so area = base x height = 12(5) = 60
*Sunday, April 26, 2009 at 9:54am by Reiny*

**calculus**

A 6 m3 box with a perfect triangle base and lid and 3 rectangular walls is to be constructed from 2 materials. The cost to make the base 1$/ft2 and that for the lid and walls is 4/2 $/ft2. What dimensions will result in the most cost-effective construction?
*Sunday, December 16, 2012 at 8:33pm by Alex *

**Math**

The surface area of a prism consists of two parts: 1. area of the bases 2. area of the sides. Even without knowing the dimensions of the bases, the area of the sides can be calculated if the perimeter is known: Side area = perimeter of base * height = 36 inches * 8 inches = ...
*Thursday, February 24, 2011 at 10:43pm by MathMate*

**pre algebra**

Are you asking for surface area or volume? Volume = 1/3 area of base times height Surface area = area of base + areas of sides. Area of triangle = 1/2 base times height
*Thursday, April 22, 2010 at 6:31pm by PsyDAG*

**maths - ratio**

the scale on a map is 1:2500, a pond is represented on the map as a shape whose perimeter is 12cms. Find the actual perimeter of the pond in kilometres. I came up with the answer 0.3. Is this correct?
*Tuesday, September 16, 2008 at 12:15pm by savannah xx*

**Algebra**

What is the value of b in the triangle shown below? The triangle they are showing is a right triangle...the length is 3b and the width is b...on the inside of the triangle it says 24in^2. A.–4 in B.4 in C.±4 in D.no solution Please help I do not know how to do these...if I had...
*Monday, February 25, 2013 at 6:42pm by Cassie*

**physics**

Where is the ball? Toward first base, toward home plate. Draw the diagram. make a triangle with distance. Then use the distance formula, and take the derivative to find rates. This is not physics, but calculus.
*Tuesday, January 25, 2011 at 6:49am by bobpursley*

**Math - Calculus I**

Draw a side view of the situation (The cone will look like an isosceles triangle with a rectangle (the cylinder) sitting on its base and touching the sides) let the radius of the cylinder be r and let the height of the cylinder be h Look at the small right-angled triangle at ...
*Thursday, December 5, 2013 at 9:36pm by Reiny*

**geometry**

A trapezoid has a lower base which is twice as long as its parallel upper base. The upper base is 21 cm long. One non-parallel side is 20 cm long and the other non-parallel side is 6 cm longer than the shorter non-parallel side. What is the perimeter of the trapezoid?
*Sunday, November 8, 2009 at 10:55pm by kimama*

**math**

If log (base b) 3 = 1.099 and log (base b) 6 = 1.792, find log (base b) 18 = ???
*Saturday, November 5, 2011 at 1:25pm by Nilan*

**MATH! PLEASE REPLY ASAP! **

Surface area: The points A and B are the mid-points of WX and XY respectively. For triangle VWX, the surface area is half the base(66) multiplied by the slant height VA of 56. For triangle VXY, the surface area is half the base(32) times the slant height of 63. Add and double ...
*Sunday, January 23, 2011 at 5:36am by MathMate*

**math**

the perimeter of a triangle is 54 centimeters. the longest side is 6 centimeters less than the sum of the other two sides. Twice the shortest side is 10 centimeters less than the longest side. Find the lengths of each side of the tirangle
*Friday, January 20, 2012 at 3:26am by Toni*

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