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 its diameter is 112 m.

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

1.	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 its diameter is 112 m.
Answer» 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 its diameter is $1 \frac{1}{2} m$ .