Answer:
162.4 in²
Step-by-step explanation:
The area (A) of a regular octagon is
A = [tex]\frac{1}{2}[/tex] perimeter × apothem
here perimeter = 8 × 5.8 = 46.4 in, hence
A = 0.5 × 46.4 × 7 = 162.4 in²
