please help me ASAP solve them by doing the right-hand side and then the left-hand side. please help me ASAP so I'm not sure what is the correct answer some of my friends got 7/12 others got pi/5 and some got pi/3 I'm not sure if those are even correct answers

2. Verify the Divergence Theorem for the vector field F = (x - =)i+ (y' - elj + (2? - y)k where R is the region bounded by a = 1-x? -y' and = = 0. (Note that the surface may be decomposed into two smooth pieces, S, and 52.)