A swimming pool is 20 ft wide, 40 ft long, 3 ft deep at the shallow end, and 9 ft deep at is deepest point. A cross-section is shown in the figure. 6 12 16 I 3 6 If the pool is being filled at a rate of 0.8 ft3/min, how fast (in ft/min) is the water level rising when the depth at the deepest point is 5 ft? (Round your answer to five decimal places.) ft/min
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