A trough has ends shaped like isosceles triangles, with width 2 m and height 5 m,...

  

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A trough has ends shaped like isosceles triangles, with width 2 m and height 5 m, and the trough is 18 m long. Water is being pumped into the trough at a rate of 6 m/min. At what rate (in m/min) does the height of the water change when the water is 1 m deep? 18 m 5 m -2 m A trough has ends shaped like isosceles triangles, with width 2 m and height 5 m, and the trough is 18 m long. Water is being pumped into the trough at a rate of 6 m/min. At what rate (in m/min) does the height of the water change when the water is 1 m deep? 18 m 5 m -2 m