The boundary or tne sem-circular disk d= {(%, y)er:x+ysl,y20 and let ry)= *y for (r ted counter-clockwise over c, equal to y)ed.lif n 1s the outward unit normal

the boundary or tne sem-circular disk D= {(%, y)ER:x+ysl,y20 and let ry)= *y for (r ted counter-clockwise over C, equal to y)ED.lIf n 1s the outward unit normal to C, then the integral (Vp)hds, evaluate (a) (b) T-2 c) d)