Question

Volume of a cylindrical tank having $7$ meter diameter is $770$ cubic meters, then find height of the tank.

Answer 1

Volume of cylinder $=\pi r^{2}h$ ($r=$ radius, $h=$ height)

Radius $=\frac{diameter}{2}=\frac{7}{2}$

$\Rightarrow 770=\frac{22}{7}\times \frac{7}{2}\times \frac{7}{2}\times h$

$\Rightarrow h=20$m.