The volume of a sphere is 3,052.08 units cubed. What is its diameter?
A) 18 units
B) 20 units
C) 31 units
D) 47 units
3,052.08 = (4/3) pi (r)^3
cube root ( [ 3,052.08 / pi ] * (3/4) ) = r = 9
So.....diameter = 2r = 18 units
+252 
