A tank is shaped like a vertical cylinder; it initially contains water to a depth of 9
Chapter 3, Problem 54(choose chapter or problem)
A tank is shaped like a vertical cylinder; it initially contains water to a depth of 9 ft, and a bottom plug is removed at time t D 0 (hours). After 1 h the depth of the water has dropped to 4 ft. How long does it take for all the water to drain from the tank?
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