Posted by **Adrian** on Wednesday, March 7, 2012 at 4:19pm.

A rectangular prism has a length of 100 cm, a height of 10 cm and a width of 5 cm.

What is the volume of the rectangular prism?

A. 3100 square centimeters

B. 1550 square centimeters

C. 5000 square centimeters

D. 1200 square centimeters

2. A cylinder has a diameter of 5 meters and a height of 10 meters.

What is the volume of the cylinder?

A. 188.4 meters cubed

B. 117.75 meters cubed

C. 176.625 meters cubed

D. 196.25 meters cubed

3. A cylinder has a radius of 10 meters and a height of 100 meters.

What is the volume of the cylinder?

A. 65,904 meters cubed

B. 69,008 meters cubed

C. 37,680 meters cubed

D. 31,400 meters cubed

- Math -
**Ms. Sue**, Wednesday, March 7, 2012 at 4:22pm
I'll be glad to check your answers.

These sites will help you.

http://math.about.com/od/formulas/ss/surfaceareavol_4.htm

http://www.mathopenref.com/cylindervolume.html

- Math -
**Adrian**, Wednesday, March 7, 2012 at 4:29pm
C

B

D?

- Math -
**Ms. Sue**, Wednesday, March 7, 2012 at 4:34pm
1 and 3 are correct.

2 is wrong. Did you use the radius in this problem?

- Math -
**Adrian**, Wednesday, March 7, 2012 at 4:39pm
no

- Math -
**Ms. Sue**, Wednesday, March 7, 2012 at 4:40pm
What is your answer using the radius?

- Math -
**Adrian**, Wednesday, March 7, 2012 at 4:41pm
im not sure how to solve this problem at all

- Math -
**Ms. Sue**, Wednesday, March 7, 2012 at 4:48pm
Solve it the same way you solved # 3.

V = pi * r^2 * h

See the website above for more explanation.

- Math -
**Adrian**, Wednesday, March 7, 2012 at 4:50pm
divide the left and right side of the equation by ð r^2

V / (ð r ^2) = h ?

- Math -
**Ms. Sue**, Wednesday, March 7, 2012 at 4:55pm
You need to find the volume of the cylinder. Use the volume formula above.

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