Please share the solutions to questions 2b, 2d and 2f

2. Set up (but do not evaluate) the formula to find the volume of the solid of revolution generated by region bounded by r = y', the r and y axes, and y = 1. about the line (a) y = 1; (b) y = 2; (c) r = -1; (d) r = 2; (e) r = 1; (f ) I = 0