Water is flowing at the rate of 15 km/h through a pipe of diameter 28 cm into a rectangular tank which is 44 m long and 28 m wide. Find the time (hours) in which the level of water in the tank will rise by 50 cm.
Pipe is in the form of cylinder
Rate of flow of water = 15 km/hr = 15000 m/hr
Volume of water flowing per hour = π r^2*h = (22/7)*(14/100)*(14/100)*15000 = 924 m^3
Volume of water to be filled in rectangular tank = 44*28*(50/100) m^3 = 616 m^3
So required time = 616/924 hrs = 2/3 hrs = 40 min.
Correct option 10) None of these