The ratio of the volumes of two cubes is 729 : 343. What is the ratio of their total surface areas?  Choose the correct choice from the following choices:
A) 81 : 49 B) 81 : 122 C) 81 : 124 D) 81 : 126 E) 81 : 129
Ratio of the sides = 3√729 : 3√343 = 9 : 7   Ratio of surface areas = 9^2 : 7^2 = 81 : 49   81 : 49nswer: Option 81 : 49
<result>A</result>
The ratio of the volumes of two cubes is 729 : 343. What is the ratio of their total surface areas?