Calculate $\frac{{}_S}{b}ar(F)*\frac{d}{b}ar(S)$ where

$\frac{?}{\text{b}\text{a}\text{r}}(F)=($:$3x{y}^2,x{e}^z,z^3$:$)$

$S$ is the surface of the solid bounded by the cylinder $y^2+z^2=9$ and the planes $x=-3$ and $x=-1$

Question Help:

Video