Question 872977
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Hi,
<img src='http://img69.imageshack.us/img69/7421/spherem.png' border='0'/></a>
Great circle: r = 15cm {{{A = pi*r^2}}}
Vsphere  = (4/3)pi*r^3 = (4/3)pi(15)^3 = 4500pi cm^3