Flow of a liquid through a 12 cm diameter pipe, shown below, fills a 75 cm diameter cylindrical surge tank. The tank is open to atmospheric pressure. At time t=0, the water depth h in the tank is 30 cm. Estimate the time required to fill the tank to a depth of 1 m. Assume that the average velocities V and V do not change in time. 6.5 cm V =2.5 m/s 75 cm h Surge tank 12 cm V = 1.9 m/s