The ratio of the volumes of two cubes is 729 : 1000. What is the ratio of their total surface areas?  Choices:
A) 1:12
B) 81:13
C) 46:51
D) 86:16
E) 56:13
Ratio of the sides   = ³√729 : ³√1000 = 9 : 10   Ratio of surface areas   = 92 : 102 = 46:51   Answer:46:51
<result>C</result>
The ratio of the volumes of two cubes is 729 : 1000. What is the ratio of their total surface areas?