Practice: 16, 13, 14,17, 29, 37 (part a only), 60 1. Use Green's Theorem to evaluate J y dx - xy2 dy C is the curve line segment from (0,0) to (4,0), the portion of the circle of radius 4 centered at the origin from (4,0) to (0,4) and then the line segment from (4,0) to (0,0) pictured to the right 15.4