If the ratio of volume of two cubes is 64 : 27, then find the ratio of their surface areas is:

4 : 3 12 : 15 16 : 9 64 : 27

16 : 9

Ratio of volumes  = 64 : 27 Ratio of edges  = \(\sqrt[3]{64 }\) : \(\sqrt[3]{27 }\)                         = 4 : 3 Ratio of surface areas =  6(4)2 : 6 (3)2                                    = 16 : 9