Question

if the total surface area of a solid hemisphere is $462{cm}^2$ find its volume

Answer 1

The surface area of hemisphere is $3\pi r^2=462r^2=\frac{462\times 7}{22\times 3}r=7cm$

Volume of hemisphere is $\frac{2}{3}\pi r^3\frac{2}{3}\times \frac{22}{7}\times 7^3\frac{1}{3}\times 44\times 49=718.66c{m}^3$