Math

posted by Adrian

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

  1. Ms. Sue

    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

  2. Adrian

    C
    B
    D?

  3. Ms. Sue

    1 and 3 are correct.

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

  4. Adrian

    no

  5. Ms. Sue

    What is your answer using the radius?

  6. Adrian

    im not sure how to solve this problem at all

  7. Ms. Sue

    Solve it the same way you solved # 3.

    V = pi * r^2 * h

    See the website above for more explanation.

  8. Adrian

    divide the left and right side of the equation by ð r^2

    V / (ð r ^2) = h ?

  9. Ms. Sue

    You need to find the volume of the cylinder. Use the volume formula above.

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