Posted by CrissyXD on Tuesday, October 23, 2012 at 7:43am.
A set of 12 identical metal ballbearings was made from 10 cm^3 of metal. Calculate the radius of each ball bearing.

Math  Reiny, Tuesday, October 23, 2012 at 9:37am
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