Given: diameter of 8m , depth is 1.4m and water is pumped into pool at a rate of 19 meter cube.
Find: number of hours to fil the pool.
Step-by-step explanation: the formula for the volume of a cylinder is

the problem gives d=8m , so r=4m
the pool holds

At a rate of 19 meter cube per hour :

Final answer: the required answer is 3.7018 hr