Question: Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified line. Sketch the region, the solid and a typical disk or washer.

a) \(y={{x}^{2}},\,\,x=2,\,\,\,y=0;\,\,\,\text{ about the y-axis}\)

b) \(y=x,\,\,\,y=\sqrt{x};\text{ about }x\text{ }=-2\)