Question

The radius of a sphere is 14 cm. It is melted to form smaller spheres each having a radius of 7 cm. What will be the ratio of surface areas of one small sphere to that of the larger sphere?

Answer 1

volume of large sphere (radius 14cm)

4/3πr^3

4/3× 22/7 ×14^3


volume of smaller sphere (radius 7 cm)

4/3× 22/7 ×7^3

ratio of volumes = 4/3× 22/7 ×14^3 : 4/3× 22/7 ×7^3


THE VOLUMES OF THE SPHERES HAS TO BE SOLVED