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December 21, 2014

Search: Math 7 - Formula of a Surface Area of RectangularP

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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 (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 x^3, and the formula for surface area of a sphere is A = 4x^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 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
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

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

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

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
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. ( + 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

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: 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
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
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

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

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 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

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

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

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

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
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 ̤T̤̈Ẅ̤̤z̤̈Ḧ̤̤r̤̤̈ ⍨

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

PHYSICS II
A uniform electric field of magnitude 3.0010^4 N/C makes an angle of 37 degrees with a plane surface of area 1.4010^−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
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

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 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

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 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

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
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

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

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

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

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

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

math
Find the lateral and surface area of the right rectangluar prism whose length is 7 cm, width is 5 cm and height is 1.5 cm. I did 2(7 x 1.5+ 1.5 x 5) and I got 36 as my lateral area. Then I add 36+ 2(7 x5) and I got 106 as my surface area. Is this right?
November 11, 2007 by carly

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

Math
The surface area of a rectangular prism is 10.4 in2. What is the surface area of a similar prism that is larger by a scale factor of 3? I am tearing my hair out over this question! Please help asap!
May 5, 2011 by Kat

math
Empirical data suggest thatthe surface area of a 180-cm-tall human body changes at the rate ofsquare meters/kilogram, where W is the weight of the body inkilograms. If the surface area of a 180-cm-tall human body weighing 70 kg is 1.886277 m ,what is the surface area of a ...
May 21, 2012 by siti

Math for Ms. Sue please! Last math questions!
For numbers 13, find the indicated measurement of the figure described. Use 3.14 for pi and round to the nearest tenth. Find the surface area of a sphere with a radius of 8 cm. 267.9 cm^2 803.8 cm^2 2143.6 cm^2 201.0 cm^2 Find the surface area of a sphere with a diameter of ...
March 3, 2013 by Delilah

math
If the volume of a cylindrical block is equal to 800cm^3 prove that the total surface area is equal to 2(pi)x^2 + (1600)/x, where x cm is the radius of the base. hence obtain the value x which makes the surface area a minimum.
April 17, 2012 by matt

Math
The surface area of a prism is 54 square inches. What is the surface area of a similar prism that is smaller by a scale of 1/3? My answer- 6
April 6, 2014 by Unknown

Math
Find the surface area of each rectangular prism or cylinder to the nearest tenth of a degree. 7. Bases are isoceles triangles with legs that measure 5 centimeters. The height is 7 cm. I Don't know how to set it up. What formula do i use and how? Thanks
March 11, 2008 by Anonymous

Math
The surface area of a prism is 54 square inches. What is the surface area of a similar prism that is smaller by a scale of 1/3?
April 5, 2014 by Karley

math
surface area of a rightcircular cylinder. The area of a right circular cylinder is given by the polynomial 2pierh^2 where h is the height and r is the radius of the base. Suppose that a beverage can has a height of 6.2 inches and a radius of 1.3 inches. Evaluate the polynomial...
March 22, 2013 by pam

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