22. A farmer connects a pipe of internal diameter 20 cm from a canal into a cylindrical tank inher field, which is 10 m in diameter and 2 m deep. If water flows through the pipe at therate of 3 km/h, in how much time will the tank be filled?

22. A farmer connects a pipe of internal diameter 20 cm from a canal i

1.	22. A farmer connects a pipe of internal diameter 20 cm from a canal into a cylindrical tank inher field, which is 10 m in diameter and 2 m deep. If water flows through the pipe at therate of 3 km/h, in how much time will the tank be filled?
Answer» R=10 cm R=500cmh=200cmvolume of water flows in 1 hr =π×10×10×300000(cmcube)volume of cylindrical tank =π×500×500×200time taken to be fill the tank=volume of cylindrical tank÷volume of water flow in 1 hr =(π×500×500×200)÷π×10×10×300000=(5÷3)hr=(5÷3)×60=100min