Use Stokes' Theorem $to$ compute the counterclockwise circulation $of$ the vector field $F=($:$4y,1z,4x$:$)$ along

the curve $C,$ where $Cis$ the rectangle with vertices $(0,0,3),(2,0,3),(2,5,3),$ and $(0,5,3).$

$To$ apply Stokes' Theorem, you must first find the curl $of$ the vector field.

curl$(F)=$

Now, use the curl $to$ compute the circulation.

Circulation $=o{\displaystyle \underset{C}{\overset{\phantom{}}{}}}F*dr=$