Question

The ratio of the volumes of two cubes is 729 : 1331. What is the ratio of their total surface areas

• A. 81 : 121
• B. 27 : 33
• C. 9 : 11
• D. 729 : 1331

Answer 1

Answer:

A. 81 : 121

Radio of sides =$_3\sqrt{729}:_3\sqrt{1331}=9:11$

Radio of surface area $=9^2:11^2=81:121$