Question 6 (16 points) Let R be the region between the curves y = x2 and y = 3x. (a) (8 points) R is revolved about the x-axis to produce a solid. Set up, but do not evaluate, an integral which computes the volume of this solid. You may use any method you choose, but make sure you state the method you are using. I (b) (8 points) R is revolved about the line x = -2 to produce a solid. Set up, but do not evaluate, an integral which computes the volume of this solid. You may use any method you choose, but make sure you state the method you are using