Question

Find the volume of a hemisphere whose radius is $7cm$. (Given $\mathrm{\pi }=\frac{22}{7}$).

Answer 1

Find volume of the hemisphere

Given radius, $7cm$

We know that

Volume of hemisphere$=\frac{2}{3}\pi r^3$

$$\begin{gathered} =\frac{2}{3}\pi {\left(7\right)}^3 \\ =\frac{2}{3}\times \frac{22}{7}\times 343 \\ =718.66c{m}^3 \end{gathered}$$

Hence, the volume of the hemisphere is $718.66c{m}^3$.