# Find the perimeter of an isosceles triangle with a base of 45 and a side of 58

99,416 results, page 18

The side of a trinagular roof is to have the same height h and base b^2 as the side of a trapezodial roof. a. What is the ratio of the area of the triangular roof to the area of the trapezoidal roof? (For a triangle, A = 1/2b^2h. For a trapezoid, A = b1 + b2/2h.) b. Compare ...

### geometry

How do you determine whether each pair of figures is similar and justify your answer? triangle PQR, side PR is 3 and angles P and R are both 60 degrees, triangle GHI, side GH is 7 and angles G and H are both 60 degrees.

### math

if two triangles are similar, what can you say about the ratios of the two side lengths within one triangle and the ratios of the corresponding side lengths in the other triangle? Thank you anyone who helps :D

### Pre-Calculus

Solve the triangle. Round to the nearest tenth. B=54deg a=42 c=6.5 1. I found length of b using law of cosine and got 36.2 2. Using side of b, I used the law of sine to get angle A = 28.2 3. I added B+A and subtracted from 180 to get angle C = 127.8 which DOES NOT make sense ...

### Math

Determine whether the pair of triangles is similar. Justify the answer. Triangle BAC with sides of 3, 3, 2 Triangle EDF with sides of 12,12,8 also the way I described the triangles, each side corresponds with the side underneath it, if that makes sense. like the 2 and the 8, ...

### Math - Triangles

An isosceles triangle has an interior angle of 26 degrees. Which of the following is a possible degree measure for one of the other interior angles of the triangle? a) 52 degrees b) 64 degrees c) 78 degrees d) 104 degrees e) 128 degrees

### Calculus

A horizontal trough is 40 cm long and its ends are in the form of an isosceles trapezoids with an altitude of 20 cm, a lower base of 20 cm and an upper base of 3 cm. Water is being poured into the trough at the rate of 5 cm/sec. How fast is the water level rising when the ...

### GEOMETRY (SA oftriangular pyramid)

Find the surface area of a triangular pyramid with b =4 cm, h= 8.2 cm and s = 7 cm. PLEASE. How ? GEOMETRY (SA oftriangular pyramid) - MathMate, Sunday, July 14, 2013 at 8:41am Lateral surface area =perimeter of base * apothem /2 =3b*s/2 (for a regular pyramid with a ...

### Geometry

the perimeter of an equilateral triangle is 32 centimeters. find the length of an altitude of the triangleto the nearest tenth of a centimeter.

### Math

what is the area of the triangle? (its a scalene obtuse triangle) height 4.5 ft base 8.7 ft A. 13.2 ft^2 B. 19.575 ft^2 C. 20.25 ft^2 D. 39.15 ft^2

### math

triangle ABC and triangle DBC on the same base BC and angleA

### Math

In the figure below, the diagonal line divides the rectangle into halves Which statement about the figure is NOT true? On the rectangle the width is 3cm and the length is 4cm. The line that divides the rectangle is 5cm F. The perimeter of the rectangle is 14cm G. The area of ...

### Calculus

A baseball diamond is a square 90 ft on a side. A player runs from first base to second base at 15 ft/sec. At what rate is the player's distance from home base increasing when he is half way from first to second base?

### geometry

What is the area of a...... parallelogram. with a triangle. with a base of 19ft. and the triangle being a 30-60-90. with a hypotenose of 16ft

### work

If I have a base of 144" and sides of an equilateral triangle measuring 7'3", what is the height of the triangle?

### physcis

in order to determine the width of a river, a base line of 100 ft is marked off on one side. On the other side of the river is a large rock. When sighted from each end of the base line it is found that the lines of sight make angles of 60 degrees and 75 degrees, respecively, ...

### math

if the perimeter of a pentagon is 60 com, what must its dimensions be to maximize area? the pentagon has two sides equal to ecah other, (vertical side) the the base and top are all equal to each other

### Math

If two triangles are similar,what can you say about the ratios of the two side lengths within one triangle and the ratios of the corresponding side lengths in the other triangle?

### math

If two triangles are similar, what can you say about the ratios of the two side lengths within one triangle and the ratios of the corresponding side lengths in the other triangle?

### math

An isosceles, obtuse triangle has one angle with a degree measure that is 50% larger than the measure of a right angle. What is the measure, in degrees, of one of the two smallest angles in the triangle? Express your answer as a decimal to the nearest tenth.

### CSC

A vacant city lot is being turned into a neighborhood garden. The neighbors want to fence in a triangular section of the lot and plant flowers there. The longest side of the triangular section is 44 feet shorter than twice the shortest side. The third side is 22 feet longer ...

### Math

The length and width of a rectangle are (x+4)cm and xcm respectively. Write down expressions for: A. The perimeter of the rectangle B. The length of the side of a square with the same perimeter If the sum of the areas of the square and the rectangle is 94cm(square), find x Pls...

### Math

There's a rectangle. On 1 side is 8 which is the Length side I have to find out how long the width side is. The whole perimeter has to equal 25 P=25 So if both length sides are 8 then that equals 16. Now I have to see how much both width sides are I did 25-16 and I got 9 then ...

### Math- Geometry Proofs

What are some ways to prove that a triange is isoscles? i have to make a two column proof based on a problem. What is the exact problem I need help with my geometry homework. We are doing proofs and i need some help because proofs are really hard!! def. isosceles -or- if two ...

### Geometry

I;m so lost with these questiona. Any help will be appreciated. 1. Find the area of a square if one side measures 27 centimeters. 2. Exactly how many cubic inches of air can a fully inflated basketball hold if its radius is 4.2 inches? Use Pi 3. How many cubic centimeters can ...

### Algebra 2

Given the area of the figure, find its perimeter to the nearest tenth. 1. A = 90 ft^2; number of squares: 6. A: ? 2. A baseball diamond is a square with an area of 8100 square feet. The length of the diagonal of any square is equal to √2 times it's side length. Finds fhe...

### Math

The area of an isosceles right triangle decreases at a rate of 5 cm² per second. At what rate is the hypotenuse changing when each of the other sides has length 10 cm? So far I have: Given: dA/dt= 5cm^2/s Find: dH/dt when b&h= 10cm And h= root 200(?)

### math

1. find the lateral area of a right prism whose altitude measures 20 cm and whose base is a square with a width 7 cm long. 2. the volume of a rectangular solid is 5376 cubic meters, and the base is 24 meters by 16 meters. find the height of the solid. 3. a rectangle has a ...

Find the area of the shaded region. the outter shape is a rectangle and the inside shape is a triangle everything but the triangle is shaded now the numbers are 18 (on left side of rectangle) and 28 (on the bottom) the wide part of the triangle on the inside of the rectangle ...

### Maths

An equilateral triangle with side length 33 is divided into 33^2 smaller unit equilateral triangles each with side 1, forming a triangular lattice. We color each segment of length 1 either Red, Blue or Green, subject to the condition that each small unit equilateral triangle ...

### math

Find the dimensions of a rectangle with perimeter 40 with the largest area. (hint: Find an equation for area and one for perimeter, use both to find perimeter in terms of one variable)

### geometry

Given: ABCD is a rectangle, diagnoals AC and BD intersect at E Prove: Triangle AEB is isosceles

### math

how many lines of symmetry does an isosceles right triangle have? draw a diagram to illustrate

### Math

Given a circle with chord AB and diameter CD, prove that triangle ABD is isosceles if AB is perpendicular to CD.

Prove that no isosceles right triangle exists whose sides are integers.

### Geometry

ABC is an isosceles triangle where AB = AC and BC = 60. D is a point on BC such that the perpendicular distance from D to AB and AC is 16 and 32, respectively. What is the length of AB?

### Math

In the diagram triangle xyz is isosceles with xy=xz.Also,point w is on xz so that xw=wy=yz.The measure of angle xyw is

### Geometry

The Great Pyramid of Cheops is a right square pyramid with height of 148 m and a square base with a perimeter of 940 m. The Transamerica Building in San Francisco has the basic shape of a right square pyramid that has a square base with a perimeter of 140 m and a height of 260...

### geometry b

find the area of a triangle with base of 5 and a height of 3 and 3/4

### Math

Find the area of a triangle with base of 15 m and altitude of 12 m

### Fractions

Find the area of the triangle with base 7/8 and height 6/5

### math

a rectangle and a triangle have equal areas. the lenght of the rectangle is 12 inches ,and its width is 8 inches. if the base of the triangle is 32inches,what is the lenght,in inches of the altitude drawn to the base? a)12 b)16 c)6 d)8 d)9

### Math

"if side a = 4, find x and y in a triangle"

### Algebra

The area of a triangle is 2x^2+5x+3. The height is 4x+6. Determine the base of the triangle.

### math

The area of a triangle is 54.5cm. What is the triangle's base if the height is 4 cm?

### Geometry

The area of a triangle is 30cm^2. What is the base of the triangle if the height is 6 cm?

### geometry

1. A triangle has side lengths of 8, 10, and 12. what kind of triangle is it? 2. A triangle has side lengths of 3, 4, and 7. what kind of triangke is it?

### geometry

The shortest side of two polygons have lenghts in the ratio 2:5.The perimeter of the smallest polygon is 20. what is the perimeter of the large polygon?

### algebra

a1. Simplify 5 + (7-1)2/6 A11 B41/6 C51/6 D7 E17/6 F23 b2. Simplify (26/2 + 33)/(23) A11/3 B5 C20/3 D8 E6 F131/8 f3. Simplify [7+2(5 - 9)2]/[(4+1)2 - 3(22)] A-23/2 B18/7 C-13 D9/4 E8/41 F3 e4. Simplify 36 – 2x[4(-3-2)] A36 - 28x B16 - 2x C76x D40x + 36 E-720x F36 + 8x c5. ...

### Math

A pizza box with a square base is to be made from a rectangular sheet of cardboard by cutting six 1-inch squares from the corners and the middle sections and folding up the sides (see the figure). If the area of the base is to be 144 in^2, what size piece of cardboard should ...

### Math

A pizza box with a square base is to be made from a rectangular sheet of cardboard by cutting six 1-inch squares from the corners and the middle sections and folding up the sides (see the figure). If the area of the base is to be 144 in^2, what size piece of cardboard should ...

### math

one side of a right triangle is 8 cm.the hypotenuse is 3 cm.more than twice of the other side.what is the measure of the other side?illustrate using the pythagorian theorem

### math

in a triangle /the small side is x+6 one side at the bottom is 20/ another side divid by a line start from the angle cross from it and mark 1 part is x /another part is 8/what is valuae of x

### geometry

building a ramp that will be in the shape of a perfect right angle triangle vertical height will be 10 feet and horizontal base will be 15 feet what is the lenght of downward sloping side or the ramp

### Math

The sides of a triangle is 6,8,15 cm long. in a similar triangle, the longest side is 21 cm long find the two sides.

### Calculus

Consider a regular tetrahedron whose face is an equilateral triangle of side 7. Find the area of the horizontal cross section A at the level z=3. A= ? Find the volume of the tetrahedron. Consider a regular tetrahedron whose face is an equilateral triangle of side 7. Find the ...

### pre calculus

For a given right triangle, side a = 76.4 feet and side b = 39.3 feet. What is the length of side c to the nearest tenth of a foot?

### pre calculus

For a given right triangle, side a = 76.4 feet and side b = 39.3 feet. What is the length of side c to the nearest tenth of a foot?

### math stumped...

is the solution of 1/3x=21? greater than or less than 21? the volume F of the cylinder is 65n cubic centimeters. the height of the cylinder is 5 centimeters. use the vomula v=Bh to find the area of the base of the cylinder? the total area of triangle is 44 sq in. the area of ...

### Algebra

Need help with these-- 21. Find the possible values of a, of the distance between the points is 5, and the coordinates are (1, 1) and (4,a) 22. The Pythagorean Theorem works only for _______ triangles. Right? 25. Three sides of a triangle are 2, 4, and 8. The two smallest ...

### General Physics II

___A __/__\ B/____\C radius (each side of this equilateral triangle) 0.5 m Three point charges are located at the corners of an equilateral triangle as in the figure below. Find the magnitude and direction (counterclockwise from the +x-axis of the net electric force on the 0....

### Math

A triangle has sides w/ lengths of 3x, 5x, and 8x. All of the sides add up to 180. Express the perimeter of the triangle in terms of x. PLEASE HELP!!!!!

### Algebra 1 (Reiny)

The measures of the sides of a triangle are shown as polynomials. The measures are: 2s^3 + 4; 5s; 4s^2 + 1. Write a polynomial to represent the perimeter of the triangle.

### MATH

MARY DREW A REGULAR PENTAGON EACH SIDE HAVING A LENGTH OF 4 INCHES. IF SHE DOUBLES EACH SIDE, WHAT WILL HAPPEN TO THE PERIMETER?

### algebra

emily is constructing a triangle one side is 3 inches long and another is 5 inches long which of the following is the smallest measure emily could use for the third side of the triangle

### Math

A right pyramid,with a square base and four equal isosceles triangles ,is cut from a square piece of paper which is 3x cm long.If the area of the shaded part is 54 cm2, find the value of x.Please help me to solve this problem.

### mathematics

An equilateral triangle with side length 33 is divided into 332 smaller unit equilateral triangles each with side 1, forming a triangular lattice. We color each segment of length 1 either Red, Blue or Green, subject to the condition that each small unit equilateral triangle ...

### Triangles math

Can someone direct me please. Am I doing this correctly. Draw a right triangle with the base of 2 units and a height of 3 units make three copies so that the length of the new sides are 50% , 300%, and 500% of the original. My idea is First triangle 2× 50 and 3× 50 Second ...

### 7th grade accelerated math / pre algebra

write two equivalent expressions for the area of the figure the figure is a triangle inside the triangle it says x + 4 and the #16 is written along the length of one side of the triangle. The answer is 8(x +4) and 8x + 32 but I don't know how they got it

### Math

One side of a square frame measures 12 inches. What is the perimeter of the frame? Is this right 12*4=48 Perimeter =48

### Name the shape

height X base 1 + base 2 divided by 2 triangle i think i am not possitive.

### geometry

what is the base and heigt of a triangle that has an area of 27 feet squared and the height is 3x base?

### math

1)In the figure, the vertices of right-angled isosceles triangle ABC are A, B(2,0) and C(8,0) respectively. find the equations of AB and AC 2)If the x-intercept and y-intercept of the straight line L: B(y-2) =Ax+8 are -8 and 3 respectively, find a)the value of A and B b)the ...

### Calculus

A baseball diamond is a square with side 90 ft. a batter hits the ball and runs toward first base with a speed of 24 ft/s. (a) At what rate is his distance from second base decreasing when he is halfway to first base? (b) At what rate is his distance from third base increasing...

### Calculus

A baseball diamond is a square with side 90 ft. a batter hits the ball and runs toward first base with a speed of 24 ft/s. (a) At what rate is his distance from second base decreasing when he is halfway to first base? (b) At what rate is his distance from third base increasing...

### math

Base of a triangle is 12 inches longer than twice the length of altitude x. Write polynomial area of triangle.

### maths

the area of triangle ABC is 38.8cm^2 Work out the length of AC Angle c =54 base=12 (scalene triangle)

### math

What is the area of a hexagon all angles are right angles top 18 in side 20 in other side hook 12 in and side hook 6 in also what is the perimeter?

### Math

The area of a square is 36 square feet. If each side is lengthened by 4 feet, how could the perimeter of the new square be calculated? A. Divide 36 by 4 to get 9. Then add 4 to 9 to get 13 and multiply this by 4 to get the new perimeter. B. Divide 36 by 4 to get 9. Then add 4 ...

### algebra 1 b

The sides of a triangle have measures of x, x, and y, and the perimeter of the triangle is 46. The measure y is 4 centimeters longer than the measure x. Write the solution for this as an ordered pair.

### Calculus

A right triangle with hypotenuse y and equal legs of size x has a perimeter of 36m. Express the area of the triangle solely in terms of the hypotenuse y.

### geometry

If a triangle has a 4 meter side and a 9 meter side, between what lengths could the last side be? I have the answer, but I can't figure out why/how. Thanks!

### geometry

if the base of the equilateral triangle with sides 10 centimeters long , Which is CLOSEST to the area of the base?

### math

: Hi helper, thanks for the help, this website is very good and it would not of been possible without your assistance. Here is a question i would like you to solve for me this time ....................................... let ABC be a triangle. Two straight lines which are ...

### math

List the sides of triangle ΔMNP in ascending order (shortest to longest) if: m∠M = 64°, m∠N = 48°, for this one i am not sure if your supposed to find the third angle and or the third side can you guys explain and show me the answer i got 132 degrees but can't find out ...

### pre calc

I have a few problems from my homework that I am having trouble with. #1 Find the difference quotient of f foreach function f(x)=1/(x+3) I got -2x+6 #2 Express the area of an isosceles right triangle as a function of the length x of one of the two eual sides Thanks

### Algebra

b=2, c+ sqrt of 13. Trying to find the length of the 3rd side. It is a right triangle with A on top, 2 on the right side and the sqrt of 13 on the left.

### Math

If the hypotenuse of a right triangle is 13 and one of its legs is 5, find the area fo the triangle. Answer Choices 20 40 45 30 25 I know a hypotenuse the side of a right triangle opposite the right angle. You can't multiply the hypotenuse with one of the legs.

### Math

what is the value of the missing angle? (I don't know what you call this shape but its like drawing a house on paper but its upside down ex: the triangle is on the bottom and the square is on top. where the triangle is theres a number 140 on each side and the point part has a ...

### Math

We need to make an open topped box with a square base and fixed volume of 8 cubic feet. The material for the base costs \$ 6 per square foot and the material for the side costs \$4 per square foot. Write a function for the cost as a function of the length and side of the base

### easy geometry

Can you please show you solution and final answer here. Thanks! 1.Find the altitude,perimeter and area of an isosceles trapezoid whose sides have lengths 10 cm, 20 cm, 10 cm and 30 cm. 2. The formula A=P(a+r)^2 is used to find the amount of money A in an account after P pesos ...

### geometry

Find.the.area. perimeter.of square pqrs if one side is equal (1)20cm

### geometry

Find.the.area. perimeter.of square pqrs if one side is equal (1)20cm

### Math

If the sides of a quadrilateral are in the ratio of 3:5:7:9 and the perimeter is 240 inches, find the length of each side.

### math

The sides of a triangular lot are represented by x, 2x, and 3x + 2. Find each side if the perimeter is 362 feet.

### algebra 2

the area of a square is numerically 165 more than the perimeter. find the length of the side

### math

The perimeter of the quadrilateral is 80feet. Find the length of the other sides. One side is x+9 another is x+13, 4x-5, x^2-8x.

### algebra g

You know the perimeter of a square to be 8 meters. Find the length of one side. How do you set up the formula

### Trigonometry

triangle ABC is isosceles, with AB=AC=15cm , and m<A = 150. What is the exact length of BC without using trigonmetry?

### geom.

Given a triangle ABC, draw straight lines from the vertex A to n points on the opposite side BC. (None of these n points can equal B or C.) Then do the same for the vertex B, drawing n lines from B to the side AC. Into how many parts do these 2n lines divide the interior of ...