Water is leaking out of an inverted conical tank at a rate o

Water is leaking out of an inverted conical tank at a rate of 8100cm^3/min at the same time water is being pumped into the tank at a constant rate. The tank has a height of 9 meters and the diameter at the top is 5 meters. If the water level is rising at a rate of 10 cm/min when the height of the water is 2 meters, find the rate at which water is being pumped into the tank.