.b) Find the volume of the solid generated by rotating the region bounded by the given curves abou the specified line. Use any method. Sketch the region and a representative disk/washer/shell, whichever is appropriate y=x' +1, y=0,x=1,x=3; about the line y=-1 2) Find the volume of the solid formed by revolving the region bounded by y=x - x and y=0) about the y-axis. Use any method. Sketch the region and a representative disk/washer/shell, whichever is appropriate