Question 1054063
The area of a regular polygon is: 
area = (1/2)(apothem)(perimeter)
A heptagon has 7 sides, thus:
7sides times 7 inches each side = 7*7 = 49 is the perimeter. Now back to the formula:
(1/2)(3)(49) = (1/2)(137) = 68.5 is the area of your heptagon
:
John