The work done by the force = F→ = A(y2i^+2x2j^) , where A is a constant and x and y are in meters around the path shown is:

∫F. dx = ∫A(y2i^+2x2j^)(dxi^+dyj^)             = A∫(y2dx+2x2dy)WOA = 0+0, WAB = A[0+2d2d]WBC = A[d2(-d)+0], WCD = A[0+0]W = 0 + 2Ad3-Ad3+0 = Ad3