Answer:
9
A= ×s×a
4
Step-by-step explanation:
general formula for finding the area of a regular nonagon.
A regular nonagon has nine equal sides and nine equal interior angles. If the side length of the nonagon is, and the apothem (distance from the center to the midpoint of one side) is a, then the area (A) can be calculated using the formula:
9
A= ×s×a
4
