A tank is half full of a liquid that has a density of 900 kg/m^(3). Find the work W required to pump the liquid out of the spout. (Use 9.8 m/s^(2) for g. Assume r = 12 m and h = 4 m.)
Picture is here---------> http://www.webassign.net/scalcet7/6-4-022-alt.gif