I need help please

Use the shell method to find the volume of the solid generated by revolving the region bound by y = 3x, y = 0, and x = 2 about the following lines. a. The y-axis b. The line x = 10 c. The line x = - 7 d. The x-axis e. The line y = 7 f. The line y = - 4 The volume of the given solid is cubic units. (Type an exact answer in terms of it.) e. Set up the integral that gives the volume of the solid generated by revolving around the line y = 7. The volume of the given solid is | cubic units. (Type an exact answer in terms of It.) f. Set up the integral that gives the volume of the solid generated by revolving around the line y = - 4. The volume of the given solid is cubic units. (Type an exact answer in terms of It.)