A swimming pool is 20 ft wide, 40 ft long, 3 ft deep at the shallow end, and 9 ft deep at its deepest point. A cross-section is shown in the figure. If the pool is being filled at a rate of 1.3 ft3/min, how fast is the water level rising when the depth at the deepest point is 5 ft? (Round your answer to five decimal places.) ft/min

A swimming pool is 20 ft wide, 40 ft long, 3 ft deep at the shallow end, and 9 ft deep at its deepest point. A cross-section is shown in the figure. If the pool is being filled at a rate of 1.3 ft3/min, how fast 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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A swimming pool is 20 f t wide, 40 f t long, 3 f t deep at the shallow end, and 9 f t deep at its deepest point. A cross-section is shown in the figure. If the pool is being filled at a rate of 1.3 f t 3 / m i n , how fast is the water level rising when the depth at the deepest point is 5 f t ? (Round your answer to five decimal places.) f t / m i n

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