2. Let R be the region bounded by y=0, x=4. and y=x. Let S be the solid created by revolving R about the line x = 7. a) Sketch the region R here. b) Set up the integral for the volume of the solid, S. Explain what method you are using. (Do not evaluate that integral, here). c) Now evaluate the integral in part b to find that volume. (Continue showing your work on the back of this page).