Saturday

April 18, 2015

April 18, 2015

Number of results: 122,443

**Math 7 - Formula of a Surface Area of RectangularP**

what is the formula of Surface Area of Rectangular Prisms
*June 6, 2012 by Laruen *

**math(again)**

the ? says "a cone has the surface area of 160 sq. in. If the dimensions are reduced by 1/2,what is the surface area of the new cone?" i just cant seem to find the formula for the surface area of the cone.
*January 5, 2009 by brianna*

**Math**

A roll of paper towels is 10 inches high and 2.5 inches in diameter. How many full squares inches of paper towel can fit on the roll in 15 rotation? * all I need is a formula of this question. Do I use lateral surface area formula or total surface area formula
*February 20, 2015 by Daisy*

**math (surface area)**

i know the formula of a rectangles surface area is SA= 2(lw)+(wh)+(lh), but when the dimensions are : 2a for the height, a for the width, and 3a for the length, how do i solve?
*January 23, 2011 by aleasha*

**math**

The earth has a radius of 6,380 km. The formula for the volume of a sphere is �� V = 4/3 ðx^3, and the formula for surface area of a sphere is A = 4ðx^2 . Find the volume and surface area of the earth and write the answer in scientific notation with two numbers ...
*November 3, 2010 by james*

**math**

Find the lateral and surface area of the right rectangular prism whose length is 7 cm, width is 5 cm, and height is 1.5 cm. I think the answer is 36 for lateral area and 106 as surface area. I made a formula, 2(7 x 1.5 + 1.5 x 5)) and I got 36. Then I made another formula, 36...
*November 12, 2007 by keisha*

**Math**

Find the surface area of rectangular pyramids 1. Length= 1.15ft Width=0.82 ft Height of the slanted face =3.17ft Surface Area=7.1879ft^2 Formula for Rectangular Pyramid Surface Area : B+1/2pl B=area of base p=perimeter of base l=height of slanted face
*February 5, 2014 by Jerald*

**Math**

A spherical balloon with a surface area of 36pi square inches is inflated further until its diameter has increased by 50%. The surface area of the balloon is now? I know the formula for surface area is A=4pi*r squared. I don't understand how you can figure the problem without ...
*May 11, 2014 by Gayle*

**Math Homework**

1) Given the side of a square pyramid is 6cm and the altitude is 4cm calculate the surface area. 2) Given the side of a square pyramid is 12cm and the altitude is 8cm calculate the surface area. 3) Given the side of a square pyramid is 18cm and the altitude is 12cm calculate ...
*February 6, 2007 by Student*

**math**

The surface area of spherical ball of radius r is given by the formula S=4(22/7)r2. Find surface area of ball of diameter 12cm.
*December 23, 2010 by Sam *

**Math**

The formula SA=4s can be used to find the surface area of a cube. What is the surface area of a cube with lengths of 8 1/2 inches?
*February 4, 2015 by Amy*

**math **

The formula form the surface area of a cube is SA=6s^2 where s represents the length of a side of the cube. What is the surface area of a cube with the sides 4.5 centimeters long?
*January 20, 2015 by Amy*

**Math**

The surface area of a sphere is given by the formula 4pi r2, where is it's radius. Although the shape of earth is noth exactly spherical, it has an average radius of 3960 miles. Estimate the surface area of earth.
*August 23, 2011 by Tweets*

**math**

how would you find the surface area of a cylinder with 1.7m for the diameter, and 3m for the height? would you use the formula S.A = 2pi x r x h, or S.A = area of two congruent circles + area of rectangle?
*December 9, 2008 by beeca*

**Math--Volume and Surface Area**

The volume of a cube is 125 cubic inches. Find the surface area. I know that the volume formula is V=Bh where v=volume, B=area of the base, and h=height. How do I get the surface area though? Also, The surface area of a cube is 384 square cm. Find the volume. I think it's ...
*April 24, 2007 by Emily*

**MATH-Stuck**

For each of the following, the Surface Area is given. Calculate the missing dimension. This is a rectangular prism with the width missing. The height seems to be 20 cm. The length I guess is 34 cm, and the Surface Area is 6020cm square. How do I find the missing width? I ...
*September 23, 2010 by Anonymous*

**Calculus**

if the surface area of a sphere is given by the formula SA=4pir^2, find the rate of increase of the surface area if the radius is 4 cm and is increasing at the rate of 0.5 cm/min.
*May 5, 2013 by Jason*

**Math quest3**

The formula for the surface area of a sphere is 4(3.14)r^2. What is the surface area of a ball with a diameter of 6 inches round? Round to nearest inch. I got. 113.04 Rounded is 113 inch
*February 19, 2013 by Marco*

**Math**

If the surface area of a certain body of water is 200 ft ^2 and the surface area to volume ration is 1:13; what is the volume of the body of water? I can't figure out the formula and answer to this problem.
*January 21, 2013 by Diana M*

**Calculus Homework**

You are blowing air into a spherical balloon at a rate of 7 cubic inches per second. The goal of this problem is to answer the following question: What is the rate of change of the surface area of the balloon at time t= 1 second, given that the balloon has a radius of 3 ...
*October 16, 2013 by Kelly*

**Math**

the formula for the surface area of a cylinder is: A=2πrh+2πr^2 If the height of the cylinder is 10 inches, and the surface area is 200 sq. inches, determine the length of the radius
*April 29, 2012 by Nancy*

**Algebra II**

12. A sphere has a radius of 4x + 1. Which polynomial in standard form best describes the total surface area of the sphere? Use the formula S = 4 r2 for the surface area of a sphere. (1 point) 64 x2 + 32 x + 4 64 x2 + 16 x + 4 *my answer 4 x2 + 32 x + 64 4 x2 + 4
*October 6, 2014 by Sandra*

**algebra--1 question**

A sphere has a radius of 4x + 1. Which polynomial in standard form best describes the total surface area of the sphere? Use the formula S = 4(pi)r^2 for the surface area of a sphere. 16(pi)x^2 + 16(pi) 16(pi)x^2 + 48(pi)x + 16(pi) 36(pi)x^2 + 48(pi)x + 16(pi) 36(pi)x^2 + 24(pi...
*March 24, 2015 by SkatingDJ*

**Algebra**

A sphere has a radius of 4x + 1. Which polynomial in standard form best describes the total surface area of the sphere? Use the formula S = 4(pi)r2 for the surface area of a sphere.
*March 7, 2014 by Sandra*

**Algebra 1**

Earth has a radius of about 6.4 x 10 to the 6th power m. Approximate the surface area of earth using the formula for the surface area is a sphere, S = 4 pi r squared. Earths surface is about 70 percent water. About how many square meters of earths surface are covered with ...
*February 19, 2015 by Lauren*

**math**

Okay. So i'm doing this project for my geometry class about different sports, soccer, baseball, basketball, bowling, golf, volleyball and pool. I have to find the surface area, volume, diameter, circumference, and radius of each of the balls. I got a circumference for each one...
*May 23, 2007 by Emily*

**math**

How do i find the lateral area and the surface area of a rectangular prism with the height of 8.5" the width 4" the depth 3.25" I dont want you to do it for me i want to know what formula or how i start to solve for those two things please
*May 14, 2008 by mike*

**Math**

the pretty perfume company designed a new perfume bottle. The bottle is to be a spherical shape with a diameter of 7cm. a) determine the volume and surface area of this bottle. b) The spherical bottle has a conical shaped lid with a diameter of 5cm and a height of 4.5cm. ...
*June 3, 2010 by Dolcez*

**Pre-Calculus**

The surface ares S (in square meters) of a hot air ballon is given by s(r)=4 pi r^2 where r is radius of balloon (in meters). If the radius r is increasing with time (in seconds) according to the formula r(t) = 2/3t^3, t is greater than or equal to 0, find the surface area S ...
*October 3, 2006 by Erica*

**Math - Geometry**

A cylindrical solid has a cylindrical circular hold drilled out of the center. Bascially, it's a circular cylinder with a hollow spot right down the middle. Find the surface area of the resulting solid. radius of larger circle: 2in radius of smaller circle (hollow area): 1in ...
*May 21, 2008 by Nikki*

**math**

what is the formula for triangluar prism surface area?
*December 31, 2008 by walidK*

**Math ASAP**

Height: 10 inches Base Perimeter: 40 inches Lateral Surface Area: 400 square inches (^^^this is the total surface area of the sides) What is the Surface Area of the triangular prism?
*August 26, 2013 by Omar*

**Math**

Check my answer please? Yuri is wrapping presents. The first box measures 9 inches by 12 inches by 2 inches. He has a second box with dimensions that are each half of the length of the first box. How does the surface area of the second box compare with the surface are of the ...
*April 17, 2011 by Sammy*

**Math ASAP**

Height: 10 inches Base Perimeter: 40 inches Lateral Surface Area: 400 square inches (^^^this is the total surface area of the sides) What is the Surface Area of the triangular prism? (the picture of the shape looks like a pentagon but the rectangle is much longer)
*August 26, 2013 by Omar*

**maths**

A metal pipe is 63cm long. Inner diameter of a cross section is 6m and the outer diameter is 8cm find:-surface area of the base a , surface area of the base b , the outer curved surface area inner curved surface area total surface area
*November 8, 2012 by chaithu*

**maths**

b) if the surface area of the base is increased by times its original surface area,(with the same vertical height),calculate the new surface area of the pyramid.
*April 5, 2011 by simrat*

**math**

why the formula for finding the surface area of a rectangular prism is helpful.
*February 6, 2011 by casey*

**algebra1 HELP PLEASE**

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: to find the radius of the pinata. Round your answer to the nearest hundredth. _____ feet
*July 3, 2013 by lisa*

**algebra1 HELP PLEASE**

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
*July 3, 2013 by lisa*

**math (cant figure it out)**

How to find the surface area of a cylinder with a diameter of 6ft and a height of 20cm using 3.14 rounded to the nearest whole number. (I cant figure it out my book doesn't give an example of it just a radius formula and ive tried searching the formula but i cant find any ...
*March 15, 2014 by luna*

**Math**

Measurements: Length = 5 cm Width = 18 cm Height = 26 cm ____________________________________________ Calculate the surface area of the prism. Formula: Calculate the volume of the prism Formula: Calculate the volume of the prism as if it were a pyramid. Formula: P.S. I have ...
*February 25, 2013 by Jman*

**7th grade math**

What is the surface area and volume formula of a pentagonal prism? Please help! Thank you!
*September 26, 2011 by saranghae12*

**Math**

Optimization Problem A right circular cylindrical can of volume 128tπ cm^3 is to be manufactured by a company to store their newest kind of soup. They want to minimize the surface area of the can to keep costs down. What are the dimensions of the can with minimum surface ...
*March 15, 2013 by Kevin*

**Math**

Consider the Dosage Formula y=(S/1.73 where y = childfs dosage, a = the adult dosage, and S = the surface area of the body in square meters. The Surface Area Formula is S(w,h)=0.0101w^(.425)*h^(.725) where S = the surface area of the body in square meters, w = the weight in ...
*February 15, 2012 by Fatih*

**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 dont know...
*July 3, 2013 by lisa*

**Word Problem**

The surface area of a balloon is given by S(r) = 4(pie)r^2, where r is the radius of the balloon. If the radius is increasing with time t, as the balloon is being blown up, according to the formula r(t)=4/5t^3,t>=0, find the surface area S as a function of the time t.
*August 26, 2009 by coried*

**mathematics**

the pretty perfume company designed a new perfume bottle. The bottle is to be a spherical shape with a diameter of 7cm. a) determine the volume and surface area of this bottle. b) The spherical bottle has a conical shaped lid with a diameter of 5cm and a height of 4.5cm. ...
*June 3, 2010 by Dolceza*

**Math**

Earth has a new surface of 1.97x10^8 square miles. A new planet has a surface area 13 times the surface area of Earth. What is the surface area of the new planet? Do I multiply 1.97x13 or do I multiply 13x10^8? that's what i'm confused about.
*October 23, 2012 by River Williams*

**Geometry**

What is the formula for finding the surface area of a right rectangular prism? (ex: The base of a right rectangular prism is 10 ft by 7 ft. The height is 3 ft. Find the surface area)
*January 14, 2010 by Cara*

**algebra**

sooo confusing... 6. (¼ + 7/8)(9/13) A81/13 B17/104 C81/104 D17/29 E17/13 F17/25 7. [6(2+1) -6(1+1)] / [6(4-2) - 22 ] A3/2 B3/4 C3/5 D3 E1/3 F2/3 8. -3(y – 5) - (-2y + 1) A-y +14 B5y - 4 C-5y + 14 D-13y E-5y -6 F-y – 4 For problems 9 – 15 let a = 2, b = -4, c = 7, and d = -3. ...
*September 8, 2010 by whitney*

**Math**

Explain why the formula for finding the surface area of a rectangular prism is helpful. Sincerly, Your King, the Blaberdybla :)
*April 30, 2013 by King Bla*

**math help!!! **

calculate the surface area of a cylinder with a height of 60cm and a circumference of 62.8. I dont understand the formula and how to get the answer!!
*December 10, 2013 by anonymous*

**Pre-Algebra**

Can someone PLEASE explain to me what the formula is for finding the surface area of a pyramid? I am on this lesson from my school and I can't quite understand what the formula is. If you can also give an example of a problem, that would be great! :)
*February 20, 2014 by #1Student*

**math help!!!!! Thanks**

Find the surface area of a cone with a radius of 8in. and a height of 7 in. I forgot the formula how to work this out can somebody help me. Thanks
*February 25, 2015 by Callie*

**Geometry**

When finding the surface area of a composite figure, which in this case consists of a square pyramid sitting on top of a cube, I know that the first step is to find the surface area of the cube, but after that I would find the surface area of the square pyramid, but do I ...
*June 13, 2012 by Anonymous*

**math**

Two prisms are similar. The surface area of one is four times the surface area of the other. What is the ratio of the corresponding dimensions?
*April 13, 2012 by samantha*

**math**

using the formula SA= 6s2 and V=s3 find the surface area of a room that is 11ft in length, 10 1/2 in width, and 9ft 7inches in height
*April 20, 2009 by yorkie16*

**math**

surface area formula for room measurements 23ft 6in length, width 14ft 8in and height 30 feet
*May 6, 2010 by sandra*

**Math: Surface Area**

How would you find the area of the curved surface between the top and bottom of a can?
*May 6, 2013 by Celest*

**math**

Please help with this problem. Compute the following volume and surface area. A rectangular solid has sides of 7 cm, 9 cm, and 11 cm. What is its surface area. ________ square centimeters
*June 18, 2012 by Leo*

**surface area**

Find the surface area of the cylinder in terms of pi. I know the formula is SA=LA+2B, but not sure how to plug in the numbers and get answers. Everytime I try I get wrong answer. The cylinder has I assume radius 8in and height 20in. possible answers 352piin^2 320piin^2 832piin...
*April 30, 2012 by lilman*

**math**

the volume of an cylindrical can with a radius r cm and height h cm is 128000 c^3, show that the surface area of the can is A=2(22/7)r^2 + 246000/r. Find the value for r to minimize the surface area. *i know what the quest. ask but i do not know how to apply it.
*July 29, 2011 by Yuni*

**math**

If you are calculating surface area of a right circular cone topped with a hemisphere. the radius is 4 cm and the rt angle is 8 cm...what is the lateral surface area. Is it 8.94 or is it 9? Explain answer please. Thanks
*March 16, 2012 by trey*

**Math**

The surface area of a golf ball is 8.92 in ^2. The surface area of a softball is 53.78. Find the ratio of the volumes of a golf ball to a softball. Surface Area = 4π r^2 and Volume = 4/3π r^3 I don't understand this problem, could someone please help me?
*February 8, 2012 by Brianna*

**ms.sue help!!! (math )**

hi im doing surface area I wondering how do you get the answer . this is the question Find the total surface area of a rectangular prism having dimension 1) 45cm by 30cm by 20cm
*February 3, 2014 by rian*

**formulas**

What's the formula for the surface area of a pyramid?
*June 14, 2005 by brandi*

**Calculus**

a rectangular box of given volume is to be "a" times long as it is wide. find the dimension for which it has the least total surface area ? L= aw Total surface area= 2LW + 2Lh + 2Wh = 2aw^2 + 2awh + 2wh But volume= lwh= 2aw^2 h or h= V/2aw^2 Total Surface area= = 2aw^2 + 2awV/...
*December 10, 2006 by Hero*

**math**

Find the lateral and surface area of the right rectangular prism whose length is 7 cm, width is 5 cm, and height is 1.5 cm. I got 36 as my lateral area and 106 as my surface area. Is this right?
*November 11, 2007 by keisha*

**math**

Find the lateral and surface area of the right rectangular prism whose length is 7 cm, width is 5 cm, and height is 1.5 cm. I got 36 as my lateral area and 106 as my surface area. Is this right?
*November 11, 2007 by keisha*

**Math-Algebra 2**

The surface area of a golf ball is 8.92 in ^2. The surface area of a softball is 53.78 in ^2. Find the ratio of the volumes of a golf ball to a softball. Surface Area = 4π r^2 and Volume = 4/3π r^3 I'm not sure if I did this problem right, but I think the answer is 0...
*February 9, 2012 by Brianna*

**Calculus HELP plz**

Find the area of the surface obtained by rotating the curve y=sqrt(4x) from x=0 to x=1 about the -axis. about the x-axis. surface area= ⌠ 2pi * f(x)*sqrt[1 + (f'(x))^2] dx from a to b ⌡ it's been 45 years since I used that formula. I ended up with the integral of (...
*May 12, 2007 by jimmy*

**Math**

Is there a formula used to find the surface area of a prism? For ex. A triangular prism
*February 18, 2014 by Courtney*

**Physics**

Supercapacitors, with capacitance of 1.00F or more, are made with plates that have a spongelike structure with a very large surface area. Determine the surface area of a supercapacitor that has capacitance of 1.0F and an effective separation between the plates of d=1.0 mm So ...
*September 28, 2011 by Caroline*

**Geometry / Algebra 1 **

(a) The surface area of the prism shown is 314 square meters. Write an equation that u can solve to find the value of w. side a=wm b=8m and c=(w+4)m (on the picture) I'm guessing u use the formula surface area=2ab+2bc+2ac??? Well if so I need all that solved into y=ax*2+bx+c ...
*September 5, 2013 by Ë̤T̤̈Ẅ̤ä̤z̤̈Ḧ̤ë̤r̤̈ë̤ ⍨*

**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 ...
*May 10, 2011 by Carrie*

**PHYSICS II**

A uniform electric field of magnitude 3.00×10^4 N/C makes an angle of 37 degrees with a plane surface of area 1.40×10^−2 m^2. What is the electric flux through this surface? i got 321 using the formula electricflux = E A Cos(theta), but it's wrong.
*January 17, 2011 by Cassie*

**Math ASAP**

Top Area: 13 square inches Total Surface Area: 346 square inches What is the Lateral Surface Area of the 5-sided prism?
*August 24, 2013 by Omar*

**Calc**

Consider the Dosage Formula y=(S/1.73 where y = childfs dosage, a = the adult dosage, and S = the surface area of the body in square meters. The Surface Area Formula is S(w,h)=0.0101w^(.425)*h^(.725) where S = the surface area of the body in square meters, w = the weight in ...
*February 16, 2012 by Fatih*

**math**

how about if the raduis of right circular cone is given and the surface area is given what is the formula? help please?
*July 13, 2011 by jazz*

**Math ASAP**

Base Area: 22 square inches Lateral Surface Area: 308 square inches What is the Surface Area of the hexagonal prism?
*August 24, 2013 by Omar*

**Math ASAP**

Base Area: 22 square inches Lateral Surface Area: 308 square inches What is the Surface Area of the hexagonal prism?
*August 24, 2013 by Omar*

**Math**

Writing a formula to the surface area of a cube of its length x is edge length=x over six right ? Or I did it wrong
*January 7, 2015 by Belle*

**biology**

Why is a large surface area : volume ratio needed for cells to function properly? a.Adequate surface area (plasma membrane) is needed to furnish nutrients to and expel wastes from the volume (cytoplasm). b. Smaller volumes reduce and larger surface areas reduce the cell's ...
*September 30, 2009 by CHARLOTTE*

**math**

Suppose the area of a rectangle is 36 square inches. Find the Minimum perimeter for a rectangle with this area. Please help asap. Thank you! (so much) We know that A=l*w=36 and P=2(l+w) From the area formula we see that l=36/w Putting this into the perimeter formula we get P=2...
*August 31, 2006 by l*

**Math 2**

Use the diagram to find the surface area of a triangular prism. Find the area of the two triangular faces. Then find the area of each of the three rectangular faces. What is the surface area? Describe how you solved the problem. Prism has numbers of 4, 3, 6 and 5. And teacher ...
*April 3, 2014 by Jenny 2*

**geometry**

A right pentagonal prism is 10 cm high. If the area of each pentagonal base is 32 cm squared and the perimeter is 20 cm, what are the lateral and total surface areas of the prism? I tried doing this using the formula shown in my book, but it came out wrong. the formula I was ...
*March 9, 2013 by tmouery*

**math**

A cylinder is rolled three complete revolutions to create a rectangular shape 32 inches long and 12 inches wide. Write an expression for the area of the rectangle in terms of the diameter of the cylinder. Show how you could use this expression to find a formula for the surface...
*February 19, 2015 by Anonymous*

**math**

direct variation the surface area of a sphere varies directly as the square of the radius. if the surface area of a sphere is 36 pi meters squared when the radius is 3 meters, what is the surface area of a sphere with a radius of 6 meters? S=k*r^2 solve for k first.
*May 21, 2007 by anonymous*

**Algebra**

what is the formula used to calculate the surface area for a square pyramid?
*March 4, 2014 by Steve*

**Please Help!! Math**

Wind resistance varies jointly as an object's surface area and velocity. If an mile per hour with a surface area of 25 square feet experiences a wind resistance of 225 Newtons, how fast must a car with 40 square feet of the surface area travel in order to experience a wind ...
*June 5, 2013 by Jnr John*

**math**

Area of a trampoline is 201.1 square feet. The safety padding around the jumping surface is 1 foot wide. What is the area of the jumping surface?
*March 7, 2011 by Mona*

**Math**

Jason is building models in the shape of rectangular prisms. The smaller model has a surface area of 35" sq. and a scale factor of 6. What is the surface area of the larger model?
*May 7, 2010 by Robert*

**math**

how do we find the surface area? top: bottom: right: left: front: back: its still hard when we i find the surface area of a rectanguar prism.
*April 20, 2012 by Celest*

**Sixth Grade Math**

To find the surface area of a box, add the areas of the faces: 2(lw) + 2(lh) +2(wh). What is the surface area of the box below? H=8m W=5m L =11m My answer is 366m.
*December 14, 2014 by Stephon*

**math**

The surface area of a rectangular prism is 729 square meters. What is the surface area of a similar prism that has edge lengths that are larger by a scale factor of 3
*April 16, 2015 by Anonymous*

**math**

Suppose a white dwarf star has a diameter of approximately 1.6692x10^4 km. Us the formula 4pie^2 to find the approximate surface area of the star
*November 15, 2010 by Daniel*

**Math**

The solids in each pair are similar. Find the surface area for solid B. Solid A: Surface area = 25 units squared. Scale factor = 5
*February 3, 2011 by Dominique*

**algebra**

how would i work out the following problems solve each formula in terms of the given variable 1. 5d-2g=9 ;g The formula A=2h(l+w) gives the lateral area a of a rectangular solids with length l, width,w and height h. 2. solve this formula for h 3. solve this formula for l The ...
*September 22, 2008 by jessica*

**geometry**

The lateral area of a prism is 144cm^2 (lateral area is surface area without the bases). If the height is double the width, and the length is triple the width, what is the surface area? I got the answer wrong; its supposed to be 196. Can anyone explain how to do the problem?
*April 28, 2011 by Anonymous*

**math**

A cube has a total surface area of 384 ft². Find the total surface area of the largest sphere that will fit into it.
*January 31, 2010 by maribel*