Question

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

Answer 1

Answer:

15.84

Explanation:

the water in the tank is 2/3*π*r*r*r.

ie. 2/3*22/7*3*3*3.

ie. 44/7*3*3;

now the water flows at the rate of 25/7.

so time taken is t

so therefore

44/7*3*3 =25/7*t

t=369/25

t=15.84