The ratio of the volumes of two cubes is 512 : 729. What is the ratio of their total surface areas?
Answers.
A) 1 : 22
B) 81 : 12
C) 41 : 46
D) 41 : 19
E) 84 : 12

Rationale: "ratio of the sides = ³ √ 512 : ³ √ 729 = 8 : 9 ratio of surface areas = 82 : 92 = 41 : 46 answer : c"
Answer: C