Question

For a sphere and hemisphere of radius 'r', match the following.

• A. 2πr${}^2$
• B. 4πr${}^2$
• C. 3πr${}^2$

Answer 1

TSA of sphere = 4πr${}^2$.

TSA of hemisphere = 3πr${}^2$.

CSA of hemisphere = 2πr${}^2$.