Kadin makes a snowman by stacking snowballs of radius 2 inches, 3 inches, and 6 inches. Assuming all his snowballs are spherical, what is the total volume of snow he uses, in cubic inches? Express your answer in terms of pi.
Formula for the volume of a sphere: 4/3(pi)(r)3
= 4/3(pi)23 + 4/3(pi)33 + 4/3(pi)63 = 10 2/3(pi) + 36(pi) + 288(pi) = 334 2/3(pi)