Question: Find the area of the surface given by z = f(x, y) over the region R.

\[\begin{aligned} & f\,\left( \,x,\,y\, \right)\quad =\quad 10\quad +\quad 2\,x\quad -\quad 3\,y \\ & \\
& R\quad =\quad \left\{ \,\left( \,x,\,y\, \right)\,:\quad {{x}^{\,2}}\quad +\quad {{y}^{\,2}}\quad \le \quad 9\, \right\} \\ \end{aligned}\]