the areas of the two spheres are in the ratio 1 : 4 . the ratio of their volume is ?
4 π r 12 : 4 π r 22 = 1 : 4 r 1 : r 2 = 1 : 2 4 / 3 π r 13 : 4 / 3 π r 23 r 13 : r 23 = 1 : 8 answer : c
divide(1, multiply(4, const_2))