Question

water is being pumped out through a circular pipe whose internal diameter is 7 cm if the flow is 72 cm per second how many litre of water are being pumped out in one hour?

Answer 1

According to questionDiameter of pipe = 7 CmThusRadius of pipe = r = 7/ 2 CmLet length of pipe be LRate of flow of water through pipe = 72 Cm per secThusin 1 sec water flowed = 72 CmThus in 60 sec = 72 * 60in 1 hr = 72 * 60 * 60So clearly Volume of water flowed = pi r^2 H= 22/7 * 49/4 * 72 * 60 * 60= 9979.2 Liter