Find the Probability of the shaded region with a circle on the inside of a Regular Polygon that has 7 sides. One side of your Polygon is 4.

Question

aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

Answer 1

I perceive a need to describe the shadiness of (parts of) the figure having an inscribed circle in a regular heptagon, if indeed that is the nature of the circle.  Heed Mark's advice.