If the length of the sides of two cubes are in the ratio 4:1, what is the ratio of their total surface area?	Pick
A) 4 : 1  B) 6 : 1  C) 8 : 1  D) 16 : 1  E) 64 : 1

Rationale: let x be the length of the small cube ' s side . the total surface area of the small cube is 6 x ^ 2 . the total surface area of the large cube is 6 ( 4 x ) ^ 2 = 96 x ^ 2 . the ratio of surface areas is 16 : 1 . the answer is d .
Answer: D