Question

A cuboid of dimension 10cm by 2cm by 2cm is divided into 5 cubes of 2 edges . Find the ratio of the total surface area of the cuboid and that of the cubes

Answer 1

Volume of the cuboid =40
Let each side measure of new cubes be a.

From the question we have, 5a^3 =40
→a =2
Thus , required rato of surface area=
2(10×2+2×2+10×2)/6×2×2
=22/6