# area, perimeter

20,606 results, page 46

1. ### Algebra

the area of a triangle can be determined by using the formula A= 1/2bh, where b is the length of the base, and h is the length of the height. Determine the area of a triangle with a base which is 7x to the 2nd power and a height which is 8x feet.
2. ### CALCULUS

Sketch the region enclosed by the given curves. y = tan 3x, y = 2 sin 3x, −π/9 ≤ x ≤ π/9 then then find the area. i can sketch but cant find correct area
3. ### math algebra

The amount of paint p needed to paint walls of a room varies directly as the area A of the wall of 2gallons of paint are needed to paint a wall with an area of 100sq. meters?
4. ### Calculus I

The volume of a sphere is changing at a rate of 8pi cm/sec. What is the rate of change of its surface area when the radius is 1? (the volume of a sphere is given by V=4/3pir^3 and its surface area, by A=4pi r ^2).
5. ### math/algebra

The surface area of a rectangular prism is SA=2lw+2wh+2lh. The volume of a rectangular prism is V=lwh. Write an expression for the ration of surface area to volume.
6. ### Math

The triangle in the trapezoid share a 15 inch base and a height of 10 inches. The area of the trapezoid is less than twice the area of the triangle. Find the values of X. X is greater than --- and x is less than 15 inches.
7. ### Geometry

A kite with a 10cm height and a 5 cm width. 1. By what factor does the area change if both diagonals are doubled? Explain. 2. By what factor does the area change if one diagonal is doubled? Explain.
8. ### Physics

Blood flows in an aorta of radius 4.62mm at 35.0cm/s. Calculate the volume flow rate. Although the cross-sectional area of a capillary is much smaller than that of the aorta, there are many capillaries, so their total cross-sectional area is much larger. If all the blood from ...
9. ### physics

Blood flows in an aorta of radius 4.12mm at 35.0cm/s. Calculate the volume flow rate. Although the cross-sectional area of a capillary is much smaller than that of the aorta, there are many capillaries, so their total cross-sectional area is much larger. If all the blood from ...
10. ### Physics

A)Blood flows in an aorta of radius 4.50mm at 27.5cm/s. Calculate the volume flow rate. B)Although the cross-sectional area of a capillary is much smaller than that of the aorta, there are many capillaries, so their total cross-sectional area is much larger. If all the blood ...
11. ### Math

A circle has an area of 36 in2. What is the area of a sector of the circle that has a central angle of π/6 ? A) 3 in2 B) 6 in2 C) 12 in2 D) 196 in2 I think Its 12
12. ### Math

How do you find surface area? well all you have to do is first find the pythagorom (if that is how you spell it)of the triangle then you have to find the area of everything else. ONce you are done then you have to add up all of the sides areas. After that you then get your ...
13. ### Math

I am to find the area of a square. It is cut in half and the line is measured at 6 square root 2. It also says that the two triangles are equallateral triangles. I know that the equation for a equalateral triangle is A = the square root of 3 times s squared / 4 How would I ...
14. ### math

Compute the number of vinyl tiles, measuring 8 in each side, needed to tile a kitchen measuring 24ft by 18ft. Area of kitchen:25X18=432 Area each tilein (feet):.667X.667=.44 432/.44=972 tiles Is my work correct?
15. ### Calculus

The area a meadow was approximated by measuring the length of the meadow at 30-foot intervals. THe distances measured across the meadow were 76 ft, 118 ft, 130 ft, 143 ft, 139 ft, 136 ft, 137 ft, 139 ft, 130 ft, 122 ft, and 60 ft. Use Simpson's Rule to approximate the area of ...
16. ### Applied Calculus......

A book designer decided that the pages of a book should have 1-in. margins at the top and bottom and 1/2 in. margins on the sides. She further stipulated that each page should have an area of 60 in.2. Find a function in the variable x, giving the area of the printed region.
17. ### physics

A liquid (ρ = 1.65 g/cm^3) flows through two horizontal sections of tubing joined end to end. In the first section the cross-sectional area is 10.0 cm^2, the flow speed is 245 cm/s, and the pressure is 1.20 105 Pa. In the second section the cross-sectional area is 2.50 cm^2.
18. ### math

A pyramid has a height of 5 in. and a surface area of 90 in ^2. Find the surface area of a similar pyramid with a height of 10 in. Round to the nearest tenth, if necessary. A.360 in. ^2 B.180 in. ^2 C.22.5 in. ^2 D.3.6 in. ^2 I think the answer is A but I don't know how to ...
19. ### Functions, graphs

f(x)=(x+1)/(1+x^2) a) explain why the graph lies above the x axis on the interval x=0 and x=sqrt(3) b)write an expression using the indefinite integral that gives the area between the graph f and the x axis between the values x=0 and x=sqrt(3). c)use integration to find the ...
20. ### Math

Richard cuts two of his neighbours lawns. the first is 8m long and 2m wide what is the area? the second lawn takes richard 5 times as long to cut and he knows that all lawns have the same length dimension what is the width of the second neighbour's area?
21. ### Science

Describe the plant life, animal life, and geology of the ecosystem in the area in which you live. What populations and communities are present? How dependent is your community on this ecosystem? What are the limiting factors of the ecosystem? How do I find this information? I ...
22. ### Math

A printed page is to have a total area of 100 square inches. The top and bottom margins are to be 1 inch and the side margins to be 1.5 inches. Let l represent the total length of the page and w represent the total width of the page. a) Write an equation, using L and W, to ...
23. ### math

Tony would like yo build a circular pond with depth of 1.5 feet in her backyard. She is considering how many fish a pond will hold. The home and garden store recommends 1 goldfish for every 3 square feet of surface area or 1koi for every 10 square feet of surface area. ...
24. ### Math

The surface area of a cube is 150cm squared. The area of one face of the cube is 25cm squared. What is the length of one edge of the cube?
25. ### math

Area of the four walls of a room is 108 m2. If the height and length of the room are in the ratio of 2 : 5 and the height and breadth in the ratio 4 : 5, then the area, in m2, of the floor of the room is :
26. ### Math

In triangle MABC, D bisects side BC, G bisects side AB, and the points E and F trisect side AC. What is the area of the shaded polygon, if the area of MABC is 108?
27. ### Calculus I

Let A be the area of a circle with radius r that is increasing in size with respect to time. If the rate of change of the area is 8 cm/s, find the rate of change of the radius when the radius is 3 cm.
28. ### Alegebra

The smallest regulation golf ball has a surface area of 8.86 square inches. If the diameter of the ball were increased by 10%, what will the surface area of the golf ball be?
29. ### math

The area of a circle is 25π square inches. What is the length of the radius of the circle in inches? (Area of circle = πr^2). I don't understand it please explain it to me
30. ### MATH

The area of a circle is 25π square inches. What is the length of the radius of the circle in inches? (Area of circle = πr^2). I don't understand it please explain it to me
31. ### Maths

A rectangle measuring 7cm by 4cm is enlarged by ratio 2:1? a)what's area 1)the original reactangle 2)the enlarged rectangle b)by what ratio has the area been enlarged
32. ### math

An 8-by-15-ft wall has three windows. Each window measures 3 ft by 4ft. The area of three windows is what percent of the area of the entire wall (including the windows)?
33. ### math

2)If the scale factor of a map is 1/8” is 12 miles. How far apart are two towns if they are 3 inches apart on the map? help with graphing? 1)Graph the function y = 2x2 – 3. You can describe your graph by specifying the vertex, maximum or minimum, axis of symmetry, and 4 ...
34. ### phys

Water flows steadily from an open tank into a pipe as shown in the figure. The elevation of the top of the tank is 12.3 m, and the elevation at the pipe is 3.80 m. The initial cross-sectional area of the pipe (at point 2) is 5.60×10−2 m^2; and at where the water is ...
35. ### Math

"One leg of a right triangle is 50.A line parallel to the other leg and at a distance of 20 from that leg cuts off a right trapezoid of area 320. What is the area of the original right triangle?"
36. ### Physics (Stress & Strain)

A uniform bar 1.900 meters in length and having a cross sectional area of 11.000cm^2 is subject to a loading of 5450.000 Newtons. this load causes an extension to the bar length of 2.420mm. Calculate the stress and strain produced. 11cm = .11m 2.420mm = .02420m length = 1.9m ...
37. ### Calculus

These are the two problems from my homework I don't get.. can you help me? A: y=2x-x^3 [0,1] use the limit process to find the area of the region between the graph of the function and the x-axis over the given interval. Sketch the region B: f(x)=4-(12/(x^2))Calculate the lower...
38. ### Calculus: Area

Can someone look at my work and see what i did wrong. I did this 100 times but i keep getting it wrong Sketch the region enclosed by the given curves. Decide whether to integrate with respect to x or y. Then find the area of the region. 2y=3x^(1/2) , y=4 and 2y+1x=4 y=3(x^(1/2...
39. ### Water Treatment, Chemistry

The capacity of the groundwater treatment plant has recently been expanded to receive an additional 50,000 m3/year. As a result, all of the 6 rapid sand filtration are being operated. Assume a peak flow factor of 1.5. If the filtration rate is 5 m/h, what would be the area of ...
40. ### geometry

(imageshack)123 (.)us(/)photo 123 (/) my-images 123 (/)42(/) 123 2vja. jpg(/)123 Open that link please , just delete the parentheses and spaces and 123's please please help me with my assignments I beg you cooperate with me huhu 1. in the figure , the areas of traingle cef, ...
41. ### math

The area of a triangle varies jointly with the height of the triangle and the length of its base. The area of one triangle is 200 square centimeters when its height is 25 centimeters and its base length is 16 centimeters. What is the area of a triangle having a height of 20 ...
42. ### math

Divers looking for a sunken ship have defined the search area as a triangle with adjacent sides of length 2.75 miles and 1.32 miles. The angle between the sides of the triangle is 35 degrees. To the nearest 100th, find the search area. 2.08mi 2.9mi 1.04mi 1.49 mi
43. ### calculus

A book designer decided that the pages of a book should have 1-in. margins at the top and bottom and 1 2 in. margins on the sides. She further stipulated that each page should have an area of 50 in.2. Find a function in the variable x, giving the area of the printed region (...

Consider the area between the graphs x+2y=9 and x+6=y^2. This area can be computed in two different ways using integrals First of all it can be computed as a sum of two integrals as integral f(x)dx from a,b + integral g(x)dx from b,c I got a=-6 b=3 c=19 but what does f(x)=? g(...
45. ### algebra

Paving cost is \$10.30 per square yard. find the total cost of paving the shaded area in figure 27-21. Round the answers to nearest ten dollars. 170'-0" Radius 92'0 is the degrees 256'-0" is the shaded area The sum total is 14780 please help
46. ### Math

K: 1) simplify: 1 - 1/2 + 1/4 - 1/8 + 1/16 - 1/32 2) Simplify: (1/2 - 1) - (1/3 - 1) + (1/4 -1) 3) In the proportion x^2 : 27 = 9 : x^3, what is x? 4) Between what two consecutive integers does cube root of -100 lie? 5) What is the area of a rectangle whose sides are thrice as...
47. ### Math

A rectangular lawn is 60meters by 80meters. A part of the lawn is torn out to install a pool, leaving a strip of lawn of uniform width around the pool. The area of the poolnis 1/6 of the old lawn area. How wide is the strip of lawn?
48. ### Science

What are some ways (at least two) that cells can increase their (Unicellular and multi-cellular organisms) surface area to volume ratio without splitting into multiple cells?  One way that cells can increase their surface area to volume ratio without splitting into multiple ...
49. ### Calculus

For a class project, I have been asked to find the volume of the area bounded by two functions, with cross sections of equilateral triangles. The two functions in question are y = xsinx y = -xsinx , And I need to find the volume that would result if the cross sections were ...
50. ### Math

23. Lois built a rectangular flower bed. She used four boards for the border of the flower bed. Two of the boards were 4 feet long. The other boards were 8 feet long. a. What was the area of the flower bed using these boards? b. She decided to cut each board in half to make ...
51. ### physics

A net charge of 47 mC passes through the cross-sectional area of a wire in 19.0 s. (a) What is the current in the wire? 1 A (b) How many electrons pass the cross-sectional area in 1.0 min? 2 electrons
52. ### physics

A net charge of 47 mC passes through the cross-sectional area of a wire in 19.0 s. (a) What is the current in the wire? 1 A (b) How many electrons pass the cross-sectional area in 1.0 min? 2 electrons
53. ### physics A

A net charge of 47 mC passes through the cross-sectional area of a wire in 19.0 s. (a) What is the current in the wire? 1 A (b) How many electrons pass the cross-sectional area in 1.0 min? 2 . electrons
54. ### astonomy

Assume that earth and mars are perfect spheres with the radii of 6,371km and 3,390 km, respectively. Calculate the surface area of earth. b)calculate surface area of mars
55. ### math

If a room were 2m longer and 3m broader its area would have increased by 16 sq m. if its were 1 metre shorter and 2m broader . the area would have increased by 16 sq m. find its lenght and breadth ?
56. ### algebra

I am given the perimeter of the rectangle. It is 96cm. The length is 3 times the width. What are the measurements of the 4 sides of the rectangle? I need the formula please.The answer is 12 and 36, I think.
57. ### math

Alexander's back yard is in the shape of a pentagon. The perimeter is 134 meters. Four of the sides measure 20,21,32 and 35 meters. What is the length of the fifth side?
58. ### math

the width of a rectangle is fixed at 27 cm. what lengths will make the perimeter greater than 70cm? the length must be greater than _70_ cm please check if this is correct. thank you!!

The square and triangle have the same perimeter 12cm.Each figure is made up of sides of equal measure.How long is each side of the triangle ?

theo wants to put a dinosaur border around the perimeter of his room. How many rolls of border must he buy if each one covers 10 ft?
61. ### geometry

An isosceles triangle has a perimeter of 147 inches.Each of the two equal lenghts is three times as long as the base.find the length of the base
62. ### algebra word problems

A window is shaped like a rectangle whose perimeter is 294 in. The length is 6 times as long as the width. Find the length
63. ### algebra

The length of a rectangular playground is 4 meters less than 3 times the width. The perimeter is 64 meters. Write 2 equations that would be used to solve the system.
64. ### math

a poster reproduces the Mona Lisa in the original size, but adds a 4 1/2 inch border around each side. What is the perimeter of this poster if the length is 30 3/10" and width is 20 7/8"?
65. ### Precalculus

A fiel is in the shape of a right triangle. The fence around the perimeter of the field measures 40 m. If the length of the hypotenuse is 17 m, what will be the length of other two sides.
66. ### Algebra

George built a rectangular pen for his rabbit such that the length is 1 ft more than four times the width. If the perimeter is 292 ft, what are the dimensions of the pen?
67. ### Math

Helping grandson with math. I would like to know how to do it before he does. "How many different rectangles can be made with a perimeter of 20 units? (Remember, a square is also a rectangle.)"
68. ### Maths

A rhombus sheet,whose perimeter is 32 m and whose one diagonal is 10 m long , is painted on both the sides of Rs.5 per m^2.Find the cost of the painting
69. ### Victoria Park

Algebra: Measurement One of the equal sides of an isosceles triangle is 3 m less than twice its base. The perimeter is 44 m. Find the lengths of the sides.
70. ### trigonometry

the base of an isosceles triangle measures 108 feet and forms an angle of 55 degrees with one equal sides. find the perimeter of the triangle
71. ### Algebra

The perimeter of a square must be greater than 42 inches but less than 68 inches. Find the range of possible side lengths that sat soft these conditions.
72. ### Algebra

The perimeter of a square must be greater than 40 inches but less than 94 inches. Find the range of possible side lengths yay satisfy these conditions.
73. ### Math

a rug in the shape of a regular quadrilateral has a side length of 20ft what is the perimeter of the rug? 4ft 5ft•• 40ft 80ft Correct me if I'm wrong!!
74. ### ALGEBRA

A rectangular room is 1.2 times as long as it is wide, and its perimeter is 25 meters. Find the dimension of the room rounded to the nearest tenth. The length is: The Width is:
75. ### Algebra Help

I got 2 more intense problems like this. Can someone show me the way for each step so I can follow along with the other problems I have to do? ThankS! A gardener has 40 feet of fencing with which to enclose a garden adjacent to a long existing wall. The gardener will use the ...
76. ### Pre Algebra

I am doing an ice cream cone project for math on cones and had to figure out the surface area for them, but there is a question that is "how to the surface and lateral area of each relate?" my teacher said you will see a pattern but i dont. i.e. sa= 13,293.5 and la= 10,831.7 ...
77. ### Help please? Math 141 (Pre-Cal) (Shapes)

Hi everyone I am lost on how to do this math problem: A. You have 180 feet of fencing with which to construct a rectangular pen. What is the maximum area you can enclose? B. Going back to part A, you decide to build your rectangular pen next to a large barn. (Assume the barn ...
78. ### 30-60-90 triangle

The hypotenuse of a 30-60-90 triangle is 10. Find the perimeter. How do i do that?
79. ### Math

what is the perimeter of a rectangle if L=3x+5 meters W=4x-3 meters?
80. ### geometry

Use formulas to find the lateral area and surface area of the given prism round to nearest whole number Believe height 4m and base on side 7m, front 29m, other end 7.28m possible answers; 472m^2;486m^2 443m62;486m^2 472m62;479m^2 443m62;500m^2 Can someone possibly help me
81. ### drbob222,math , algebra

Sorry i made a typo it suppost to read 20m for one base not 12. Directions: Crafts. Rose's garden is in the shape of a trapezoid. If the height of the trapezoid is 16m, one base is 12m, and the area is 224m ^2, find the length of the other base. Area= 1/2 (12 + L)*16 solve for L.
82. ### 7th grade masth asap hurry plz ms.sue somebody plz

The area of a circle is found with the formula A = pi r^2, where pi represents 3.14. If a tile artist is placing tiles in a circular mosaic pattern and the area of the circle is 658 square feet, what is the approximate radius of the circle in feet? Can you explain how to do ...

I do know how to find the area of a square and rectangle, but how do you fing the area of a rhombus. (that is at least what it looks like.) The shape I'm talking about is like a rectangle but it looks like one side got stretched to the left. (sorry if I made that even more ...
84. ### algebra1please look over THANK YOU

Mary is making a pinata that has a ball-like shape. The pinata has a surface area of 50 square feet. Use the formula for the surface area of a sphere: s=4(pi)^2 to find the radius of the pinata. Round your answer to the nearest hundredth. _____ feet i got 50=39.4 but don't ...

An estimate for negative square root of 93 is ___ A-8.1 B-8.5 C-9.1** D-9.5 Julie is digging a square area in her backyard for a vegetable garden. If the area is 52 square feet, what is the approximate length of one side of her garden? A:6FT** B:7FT C:8FT D:9FT Please correct ...
86. ### Math

In the figure below, the area of the larger square is 50 square centimeters and the area of the smaller sqaure is 18 square centimeters. What is x, in centimeters? |-------| | |---| | | | | | | |-------|
87. ### math

A student constructs a frequency distribution where the frequency of the first class is 8 and a corresponding histogram with the area of the bar in the first class is 80. The frequency for the second class is twice the frequency of the first class. In the histogram, the area ...
88. ### Math

Betty has the option of using three types of tables in her coffee shop: square tables with a side length of 42 inches; rectangular tables 26 inches wide and 73 2/3 inches long; and round tables with a diameter of 36 inches. Which of the tables has the largest area? What is the...
89. ### calculus

a trapezoid is a quadrilateral with (only) two sides (called bases) that are parallel. an isosceles trapezoid has two equal legs. the area of a trapezoid is A=(1/2)*h*(b1+b2) where b1 and b2 are the two parallel bases and h is the altitude. your problem: a water viaduct has a ...
90. ### Applied Math

Finding the perimeter.(I checked the other examples on this site but was unable to fine one that I could use that explain the steps . SO can you please help me someone.) If a rectangle length is 6.2 and width is 3.6cm.
91. ### Math

A farmer decides to enclose a rectangular garden, using the side of a barn as one side of the rectangle. What is the maximum area that the farmer can enclose with 80ft of fence? 800 sq ft? What should the dimensions of the garden be to give this area? 40ft is given so I ...
92. ### Math

Help Homework : MaKE A TABLE:relate primeter and area Amaya has 24 inches of ribbon she can glue around the edge of a rectangular gift box lid. if she wants to use all the ribbon without any overlapping, what are the length and width of a gift box lid with the greatest area?
93. ### math

The back of Dante's property is a creek. Dante would like to enclose a rectangular area, using the creek as one side and fencing for the other three sides, to create a pasture. If there is 720 feet of fencing available, what is the maximum possible area of the pasture?
94. ### Math

Which interval does the shaded area represent? (The picture shows the first quadrant with the graphs of y=x^2 and y=cosx; the shaded area is a rectangle with the top right corner being the intersection of the functions and the bottom right corner being the origin) The choices ...
95. ### Algebra

The back of George's property is a creek. George would like to enclose a rectangular area, using the creek as one side and fencing for the other three sides, to create a pasture. If there is 300 feet of fencing available, what is the maximum possible area of the pasture.
96. ### Geometric Transformation, Unit Circle, Maths

Good morning, I have this question: the matrix A = 0 6 4 12 i) show that it is invertable. ii)Find the equation of the image f(c) of the unit circle c in the form. ax^2+bxy+cy^2=d iii)Calculate the area enclosed by f(c). --------------------------------- So far I have found ...
97. ### Circumference and Area of Circles

can someone help me with these:Find the radius, diameter and circumference of a circle with an area of 64 cm2. Write your answers as decimals rounded to the nearest hundredth. Find the circumference and area of a circle that has a rectangle inscribed inside it with sides that ...
98. ### Biology

One part of the brain if stimulated during adolescence, will form two distint regions. The area of the brain is referred to as: A) the occiptal lobes B) the pituitary glands C) Broca's area D) the parietal Lobe I am unsure of what the answer is, although if I were to take a ...
99. ### Math

My answers will be posted 2! 1. Dimensions of the cube is 5x3x1 a. What is the surface area? ( i said 46ft squared ) b. What is the # of cubes? ( I said 15 ) 2. Dimensions are 5x3x2 a. Surface area? ( 62ft squared ) b. # of cubes? ( 30 ) 3. Dimensions are 5x3x5 a. Surface area...
100. ### Finding and evaluating sources

Now that you have a list of citations and their accompanying bibliographic information, what question is not relevant when evaluating the author of a source? How reputable is the author? Who considers the author an expert? Is this the last book the author has published in this...