A trough is 12 feet long and 3 feet across the top (see figure). Its ends are isosceles triangles with altitudes of 3 feet. 3 ft 2 ft3 min 12 ft- 3 ft (a) If water is being pumped into the trough at 2 cubic feet per minute, how fast is the water level rising when his 1.3 feet deep? ft/min (b) If the water is rising at a rate of 3/8 inch per minute when h = 2.3, determine the rate at which water is being pumped into the trough. ft³/min

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