Question 13
$E$ is a point of the side $AB$ of a rectangle $ABCD$ such that $AE=2EB$, and $Z$ is the midpoint of the side $BC$. $M$ and $N$ are the midpoints of $DE$ and $DZ$ respectively. If the area of the triangle $EMN$ is $5$ cm$^2$, calculate the area, in cm$^2$, of the pentagon $MEBZN$.
