If the length of an edge of cube P is thrice the length of an edge of cube Q, what is the ratio of the volume of cube Q to the volume of cube P?
Choose the correct choice from the following answers
A) 1 / 4
B) 1 / 5
C) 1 / 6
D) 1 / 27
E) 1 / 9

Rationale: the length of cube q = 1 ; the length of cube p = 3 ; the ratio of the volume of cube q to the volume of cube p = 1 ^ 3 / 3 ^ 3 = 1 / 27 answer : d
Answer: D