The ratio of the volumes of two cubes is 729 : 1331. What is the ratio of their total surface areas?  Pick one
A) 81:121  B) 81:122  C) 81:129  D) 81:120  E) 21:121
Ratio of the sides = ³√729 : ³√1331   = 9 : 11   Ratio of surface areas = 92 : 112   = 81:121   81:121nswer: 81:121
<result>A</result>
The ratio of the volumes of two cubes is 729 : 1331. What is the ratio of their total surface areas?