If someone can please help me, at least to do 2 of them, all 3 would be great but 2 is fine

8. Find the volume of the bounded region in the first octant bounded by the surface z = 1+ (x -3)2+ 3y? and the planes c = 3 and y = 4. 9. Use polar coordinates to compute the area of the region enclosed by both the cardioids r = 1 + cos and r = 1 - cos 0. 10. Use polar coordinates to evaluate the following integrals: (a) So _ 2 x(x ty'x) dydr; (b) JD Y dA, where D = {(x, y) ly 2 5,x2 + y'S1 }