A tank, shaped like a cone has height.10 meters and base radius 3 meters long. It is placed so that the circular part is upward. It is full of water, and we have to pump it all out by a pipe that is always leveled at the surface of the water. Assume that a cubic meter of water weighs 10000N, i.e. the density of water is a 10000- m3 How much work does it require to pump all water out of the tank? Enter the exact value of your answer. W = Joules

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