Question

A hemispherical tank is completely filled with water which is making empty at the rate of 25/7 liter per second with the help of a pipe. If the base diameter of the tank is 3 m, then how long will it take to empty half of the tank.

Answer 1

Given:

Diameter of hemispheric tank = 3 m

∴ its radius (r) = \(\frac { 3 }{ 2 }\) m

Volume of the hemispheric tank = \(\frac { 2 }{ 3 }\)πr³

Hence, time taken to empty the half tank = 16.5 minutes.