perimeter

Hey there!

Since the Parralelogram is 5 units high, you can use Pythagoras ($C=\sqrt{A^2+B^2}$ to gather the length of the slanted sides.

Perimiter = Top + Bottom + 2 Slanted Sides = $4+4+\sqrt{5^2+1^2}$

Thus your Perimeter is:

$4+4+5.1\approx13.1 units$

Hope this helps :)