Question

What is the total surface area of solid sphere?

Answer 1

Step-by-step explanation:

Total surface area of a solid sphere is 4πR^2.

Total surface area of a solid hemisphere is 3πr^2

Given 4πR^2 = 3πr^2. So 4R^2 =3r^2

Hence R^2/r^2 = 3/4 or R/r = √3/2

Ratio of volumes = 4πR^3/2πr^3 = 2(R/r)^3 = 2(√3/2)^3 = 3√3/4