Find the area of the curved shape How to find area of this curved shape?


It looks like the left and right boundaries of your region can be represented by equations of the form $x = f(y)$ and $x = g(y)$ for $0 \le y \le 16$.  Then your area is $\int_0^{16} (g(y) - f(y))\ dy$.  It also looks like $g(y) - f(y)$ is approximately (but not exactly) $4 + X$, so the area is approximately $16 (4 + X)$.
