Question

Can I have some help with this please? It's really confusing. I thought I did what I had to but apparently it isn't working.

Answer 1

The perimeter of the composite figure can be determining the total length of the outer boundary,

$\begin{gathered} P=AB+BC+CD+DA \\ P=5+11+3.6+5 \\ P=24.6 \end{gathered}$

Thus, the required perimeter is 24.6 units.