Section 13.6: Problem 8
(1 point)
If a parametric surface given by $r_1(u, v) = f(u, v)\mathbf{i} + g(u, v)\mathbf{j} + h(u, v)\mathbf{k}$ and $-2 \le u \le 2$, $-1 \le v \le 1$, has surface area equal to 4, what is the
surface area of the parametric surface given by $r_2(u, v) = 5r_1(u, v)$ with $-2 \le u \le 2$, $-1 \le v \le 1$?
