solve this

(a) Find the mass of a thin wire shaped in the form of the circular are y = 14 -x= (0 S xS 2) if the density function is = x y . (b) Use Green's theorem to find the work done by the force field F(x,y) = (ex - y3)i + (cosy + x ) j on a particle that travels once around the circle x? ty? = 4 in the counterclockwise direction