2. Calculate the volume of the solid of revolution formed by rotating the region bounded by y = x2-1 , x-axis, y-aris. in the fourth quadrant about the y-axis. x2 Inx 3. Find the length of the arc given by y =- fiom x=1 to x=2. 4. Find the surface area formed by revolving the arc given by y =--from x = 0 to x = 2 about the x-axis.