[u][b]Problem:[/b][/u][br]Estimate the volume of the solid that lies above region D on the xy-plane and under the function f(x,y). Do the following steps to view the animation and to find the volume of the solid.[br]1. Slide[b][i] x[/i][/b] to see the solid.[br]2. Find the area of the cross section. [br]3. Then find the volume of the solid.