A tank has a shape of a cone with a radius at the top of 3 m and a height of 7 m. The tank also has a 2 m spout at the top of the tank. The tank is filled with water up to a height of 2 m. Find the work needed to pump all the water out the top of the spout. (Use 9.8 m/s2 for g and the fact that the density of water is 1000 kg/m3.)