Question

If ratio of the volumes of two cubes is 27:64,then what will be the ratio of their surface areas?

Answer 1

Given. ratio of vol .= 27/64
. a cube / b cube = (3) cube/(4) cube
therefore sides of cube (a) and cube (b) are 3 and 4 respectively.
hence the ratio of their surface areas are 6 a square / 6 b square.
I.e = 9/16