Answer:
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 ~
D. 80 ft
Explanation:
substitute the known values into the equation for area
a = 5
area = 200
multiply both sides by 2 which gives you
then divide both sides by 5 to give you
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