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19 September, 09:21

A sphere and a right cylinder have the same radius and volume. The cylinder has a height of 3 inches. Find the radius.

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  1. 19 September, 09:47
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    V sphere = 4/3 pi r^3

    V cyl = pi r^2 * h

    4/3 pi r^3 = pi r^2 * h

    4/3 r = h

    h=3

    so: r = 3 * 3 / 4 = 2.25 in
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