Solve the following time rates problems.The ends of a water trough 8 ft long are equilateral triangles whose sides are 2 ft long. If water is being pumped into the trough at a rate of 5 ft^3/min,...

Solve the following time rates problems. The ends of a water trough 8 ft long are equilateral triangles whose sides are 2 ft long. If water is being pumped into the trough at a rate of 5 ft^3/min, find the rate at which the water level is rising when the depth is 8 in.