Posted by Anonymous on Monday, October 22, 2012 at 7:34am.
V = (4/3)πr^3
SA = 4πr^2
(4/3)π r^3 = 4000
r^3 = 3000/π
r = (3000/π)^(1/3)
SA = 4π(3000/π)^(2/3) = appr 1219 m^2
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