1-12 Find the area of the surface.
1. The part of the plane z = 2 + 3x + 4y that lies above the rectangle [0, 5] !! [1, 4]
2. The part of the plane 2x + 5y + z = 10 that lies inside the cylinder x^2 + y^2 = 9
3. The part of the plane 3x + 2y + z = 6 that lies in the first octant
4. The part of the surface z = 1 + 3x + 2y^2 that lies above the triangle with vertices (0, 0), (0, 1), and (2, 1)
5. The part of the cylinder y^2 + z^2 = 9 that lies above the rectangle with vertices (0, 0), (4, 0), (0, 2), and (4, 2)
6. The part of the paraboloid z = 4 - x^2 - y^2 that lies above the xy-plane
7. The part of the hyperbolic paraboloid z = y^2 - x^2 that lies between the cylinders x^2 + y^2 = 1 and x^2 + y^2 = 4