Cylinder A has radius 4 times the radius of cylinder B, and height 4 times the height of cylinder B.
What is the ratio of the volume of cylinder A to the volume of cylinder B?

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  1. Vb = pi*r^2*h.
    Va = pi*(4r)^2*4h.

    Va/Vb = pi*(4r)^2*4h/pi*r^2*h = 64.

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  2. 64:1

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  3. the ratio of the two lateral areas is

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