Find the work needed to pump the water in a tank that is the shape of an upside-down cone with top radius 10 meters and height 6 meters.

Find the work needed to pump the water in a tank that is the shape of an upside-down cone with top radius 10 meters and height 6 meters. You may assume that 1 cubic meter of water is attracted to the earth with 9,800 Newtons of force.