It is the sum of the lengths of the nine sides of the nonagon.
21*9 = 189 feet.
If you know the perimeter, there is no need to find it again.
There is no reason for the perimeter of a triangle to have any relation to the perimeter of an unrelated rectangle!
There are many formulas for perimeter depending on what shape you are trying to find the perimeter of. The perimeter is the distance around a shape, so one formula to find perimeter is simply adding all the side lengths together.
You add together the lengths of the nine sides of the nonagon.
The answer depends on what information you have. If you have the length of a side, then the perimeter is nine times that length.
It is the sum of the lengths of the nine sides of the nonagon.
It is the sum of the lengths of the nine sides of the nonagon.
90
nonagon
A regular nonagon has 9 sides and so its perimeter is 9*40 = 36 units of measurement
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
396 ft