Question

Find the CSA and TSA of a solid hemisphere of radius $14$cm.

Answer 1

CSA of a hemisphere$=2\pi r^2=2\times \frac{22}{7}\times 14\times 14c{m}^2$
CSA of the hemisphere$=1232c{m}^2$
TSA of a hemisphere$3\pi r^2=3\times \frac{22}{7}\times 14\times 14c{m}^2$
TSA of a hemisphere$=1848c{m}^2$.