You add together the lengths of the nine sides of the nonagon.
The area is 1583 square units, approx.
If it is a regular nonagon then it has 9 equal sides, so all you needed to do was divide 31.23 by 9. (You would have got 3.47 cm)
Each side is 117/9 = 13 cm
90
A regular nonagon has 9 sides and so its perimeter is 9*40 = 36 units of measurement
You add together the lengths of the nine sides of the nonagon.
I think you mean a regular nonagon. This is a nine-sided polygon. If you have the length of one side, you can multiply it by 9 to find the perimeter of all sides.
189 feet.
40
It is: 162/9 = 18cm
The area is 1583 square units, approx.
396 ft
21*9 = 189 feet.
If it is a regular nonagon then it has 9 equal sides, so all you needed to do was divide 31.23 by 9. (You would have got 3.47 cm)
Add the length of all nine sides up.
It is the sum of the lengths of the nine sides of the nonagon.