Question

a hemispherical tank is emptied by a pipe at the rate of 5 litres per minute how long will it take to half empty the tank if it is meter in diameter

Answer 1

Step-by-step explanation:

A hemispherical tank is emptied by a pipe at the rate of 5 litres per minute. How

long will it take to half empty the tank if it is metre in

diameter:

Answer 2

Solution:

Radius of hemispherical tank = 3/2      m  

Therefore,  

Volume of the tank = 2/3      ×22/7      ×(3/2)³= 99/14m³              

Volume of the water to be emptied = 1/2      ×99/14 = 99/28m³

           =   99000/28 litres

  Since,    25/7    litres of water is emptied in one second. Therefore,  

Total time taken to empty the half tank, i.e.,    99000/28   litres of water  

=   99000/28   ×   7/25   seconds=   99000/28   ×7/25      ×1/60      minutes

=16.5 minutes

#Hopeithelps..