A trough is 3 meters long 3 meters wide and 3 meters deep The vertical cross section of the trough parallel to an end is shaped like an isoceles triangle with height 3 meters and base on top of length 3 meters The trough is full of water density 1000 kg Find the amount of work in m joules required to empty the trough by pumping the water over the top Note Use g 9 8 as the acceleration due to gravity 8 PRO m