! d. Suppose that the cylindrical tank in the accompanying figure is filled to a depth of 4 feet at time t = 0 and that the water discharges from a hole at the bottom of the tank at the rate shown below. How many minutes will it take for the tank to drain completely? discharge flowrate : 60 min None of the above 8.4 min 6.6 min 4 ft 3.5 min = 0.025 √h, ft³/sec

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