Find the line integral ${\displaystyle \underset{C}{\overset{\phantom{}}{}}}(xvec(i)+$yvec$(j))*dvec(r)$ where $C$ is the semicircle with center at $(2,0)$ and going from $(5,0)$ to $(-1,0)$ in the region $y>0.$

Enter an exact answer.

${\displaystyle \underset{C}{\overset{\phantom{}}{}}}(xvec(i)+$yvec$(j))*dvec(r)=$