Answer:
D. 80 ft
Step-by-step explanation:
substitute the known values into the equation for area
a = 5
area = 200
[tex]200=(5*P)/2[/tex]
multiply both sides by 2 which gives you
[tex]400=5*P[/tex]
then divide both sides by 5 to give you
[tex]80 = P[/tex]
I haven't gone this through yet but Ima help as much as possible. I know for sure you need to use the Area formula of Octagon and Perimeter and substitute the values. Once you substitute you gonna solve it like any other equation. I hope I helped ~
