A hemispherical tank, full of water, is emptied by a pipe at the rate of 25/7 litres per second. How much time will it take to empty half the tank if the diameter of the base of the tank is 3 m?

Question

Philoid · Accepted Answer

Given,

Diameter of the hemispherical tank = 3 m

Radius of hemispherical tank = m

Volume of tank = m³

= … (1m³ = 1000L)

Half the tank = L

Now,

In 1 sec = L of water is emptied

Required time

=

= 990 sec

So,

To empty half the tank 16 minutes and 35 seconds are required.