posted by christina

jo was comparing two cylinders that both had a radius of 5cm. the first had a height of 10cm, and the other a height of 20cm. How many times greater was the volume of the larger cylinder?

  1. Ms. Sue

    V = pi * r^2 * h
    V = 3.14 * 5^2 + 10
    V = 3.14 * 25 * 10
    V = 785 square cm

    That's the smaller cylinder.

    Find the volume of the larger cylinder and then subtract.

  2. Ms. Sue

    The volume of the smaller cylinder is 785 cubic centimeters.

  3. Damon

    v1 = pi r^2 H1
    v2 = pi r^2 H2

    v2/v1 = H2/H1 - twice

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