10. The perimeter of a regular nonagon is 162 inches. The apothem is 97.8 inches. Find the area.

The area of the regular nonagon is 7921.8 square inches.

Step-by-step explanation:

Geometrically speaking, the area of a regular polygon is determined by following area formula:

(1)

Where:

- Area of the regular polygon, in square inches.

- Perimeter, in inches.

- Apothem, in inches.

If we know that and , then the area of the regular nonagon is:

The area of the regular nonagon is 7921.8 square inches.

trapezoid

step-by-step explanation:

first i plotted all my points on a grid graph

i made sure all of them were in the correct quadrant

then i saw it was a trapezoid or a quadrilateral

i think the answer is d im not sure