with clear solution reference on comment section

III. Consider the region R below bounded by the curves C1 : r - 4y = 4, C2 : y = Vx -1, and Ca : x + 2y = 4. (2, 1) R (4, 0) (0, -1) Set up a (sum of) definite integral(s) equal to the following: 1. the length of the portion of the boundary of R that lies on C2 (2 points) 2. the area of R, using horizontal strips (3 points) 3. the volume of the solid generated when R is revolved about the line y = 2, using the method of washers (4 points)