Answering Exams

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

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

A. 81 : 121 (Correct)
B. 9 : 11
C. 729 : 1331
D. 27 : 12

Ratio of the sides = ³√729 : ³√1331 = 9 : 11

Ratio of surface areas = 92 : 112 = 81 : 121

 

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