Find the area of the shaded polygon

To find the area of a regular polygon, all you have to do is follow this simple formula: area = 1/2 x perimeter x apothem. Here is what it means: Perimeter = the sum of the lengths of all the sides. Apothem = a segment that joins the polygon's center to the midpoint of any side that is perpendicular to that side.

3=log(n)=2

answer a: product property

not sure but it may be b, as i said i'm not sure.