. If the sides of two cubes are in the ratio 3: 1 the ratio of their total surface area is?  Pick one:
A) 3 : 1	B) 8 : 1	C) 9 : 1	D) 12 : 1	E) 9 : 1

Rationale: a 1 : a 2 = 3 : 1 6 a 12 : 6 a 22 = 9 : 1 answer : c
Answer: C