A hemispherical tank, of diameter 3m, is full of water. It is being emptied by a pipe at the rate of 347 litre per second. How much time will it take to make the tank half empty?

A hemispherical tank, of diameter 3m, is full of water. It is being em

1.	A hemispherical tank, of diameter 3m, is full of water. It is being emptied by a pipe at the rate of 347 litre per second. How much time will it take to make the tank half empty?
Answer» A hemispherical tank, of diameter 3m, is full of water. It is being emptied by a pipe at the rate of $3 \frac{4}{7}$ litre per second. How much time will it take to make the tank half empty?