Question: A water trough has an isosceles triangular cross section that is 40 m across the top and 15 m deep. The trough is 2 m

A water trough has an isosceles triangular cross section that is 40 m across the top and 15 m deep. The trough is 2 m long. It is being filled at a rate of 0.4 m3 / minute. How fast does the water level rise when the deepest point is 1 m deep? Enter your answer rounded to 3 decimal places

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