The ratio between the radii of two spheres is 1:3. Find the ratio between their volumes?
Options.
A) 1 : 28
B) 1 : 27
C) 1 : 29
D) 1 : 39
E) 1 : 22

Rationale: explanation : r 1 : r 2 = 1 : 3 r 13 : r 23 = 1 : 27 answer : option b
Answer: B