Answer:
[tex]x=8.6\text{ m}[/tex]
Step-by-step explanation:
The perimeter of a figure is the addition of all the sides that compound the boundary of the figure. Then, if the perimeter of the figure is 74m:
[tex]\begin{gathered} 74=8+5+5+1.6+5+12.1+12.1+5+1.6+5+5+x \\ 74=65.4+x \\ \end{gathered}[/tex]
Solve for x.
[tex]\begin{gathered} x=74-65.4 \\ x=8.6\text{ m} \end{gathered}[/tex]
