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Posted by 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 - , 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 - , Wednesday, March 7, 2012 at 4:29pm

    C
    B
    D?

  • Math - , Wednesday, March 7, 2012 at 4:34pm

    1 and 3 are correct.

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

  • Math - , Wednesday, March 7, 2012 at 4:39pm

    no

  • Math - , Wednesday, March 7, 2012 at 4:40pm

    What is your answer using the radius?

  • Math - , Wednesday, March 7, 2012 at 4:41pm

    im not sure how to solve this problem at all

  • Math - , 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 - , 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 - , 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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