Let R denote the region bounded by y= x"- 3 and y = 2 x Question 3 continued. (c) (5 points) Setup a definite integral (or a sum of integrals) for the volume of the solid obtained by revolving the region R described above around the line I = 7. Please state which method you used (shell or washer/ disc/cross-section). (d) (5 points) Consider the solid whose base is the region R and whose cross-sections per- pendicular to the base and perpendicular to the r-axis are squares. Setup a definite integral (or a sum of integrals) to compute the volume of the above solid. said the val