Answer the following

$1-$

Using Stoke's Theorem, evaluate ${\displaystyle \underset{C}{\overset{\phantom{}}{}}}F*dr$ where $C$ is any closed surface enclosing a square region of the xy plane bounded by the lines $x=+-2,y=+-5,$ where $F=3y{x}^{2}i+x^{2}j$

$2-$

Evaluate the integral ${\displaystyle \underset{0}{\overset{1}{}}}{\displaystyle \underset{0}{\overset{z}{}}}{\displaystyle \underset{0}{\overset{1-y}{}}}(xyz)dxdydz$