A trough is 12 meters long and 3 meters across the top (see figure). Its ends are isosceles triangles with altitudes of 3 meters. 3 m min 12 m 3m (a) If water is being pumped into the trough at 2 cubic meters per minute, how fast is the water level rising when his 1.0 meters deep? (b) If the water is rising at a rate of 2.5 centimeters per minute when h = 2.0, determine the rate at which water is being pumped into the trough m³/min