Question: A rectangular trough is 8ft long. 2ft across the top, and 4ft deep. If water flows in at a rate of 2ft3/min, how fast is

A rectangular trough is 8ft long. 2ft across the top, and 4ft deep. If water flows in at a rate of 2ft3/min, how fast is the surface rising when the water is 1ft deep? 1.0ft/min 0.5ft/min none of these 0.25ft/min 0.35ft/min

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