# Math

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A set of 12 identical metal ballbearings was made from 10 cm^3 of metal. Calculate the radius of each ball bearing.

• Math -

Volume of one ball is (4/3)πr^3
so volume of 12 balls is 12(4/3)πr^3 = 16πr^3

so 16πr^3 = 10
r^3 = 10/(16π)

r = (5/(8π))^(1/3) = appr .58 cm

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