A tank full of water has the shape of a paraboloid of revolution as shown in the gure;
Chapter 6, Problem 29(choose chapter or problem)
A tank full of water has the shape of a paraboloid of revolution as shown in the gure; that is, its shape is obtained by rotating a parabola about a vertical axis. (a) If its height is 4 ft and the radius at the top is 4 ft, nd the work required to pump the water out of the tank.(b) After 4000 ft-lb of work has been done, what is the depth of the water remaining in the tank?
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