Quiz 6 use a double integral to find the area of the region

Question

Quiz 6 - Math 53, section 213

1. Use a double integral to find the area of the region of points that lie inside the circle (x - 1)² + y² = 1 and outside the circle x² + y² = 1.

2. Find the surface area of the part of the plane 3x + 2y + z = 6 that lies in the first octant.