Question

Water is flowing at the rate of 5 km per hour through a pipe of diameter 14 cm into a rectangular tank which is 22 m wide and 25 m long . Determine the time in which the level of water in the tank will rise by 21 cm ( take pie=22/7)

Answer 1

first of all we find volume of water in the tank when its height 21cm=21/100m
so, volume of tank=pi. (r)^2.h
=(22/7)x (11)^2.21/100
=79.86m^3
now,
time=79.86/volume of pipe
=(7 9.86/77 )hour