Question

What is the area of a regular nonagon with a radius of 14 in.?

Answer 1

a nonagon has 9 sides.It can be considered to be composed of 9 triangles.
for each triangle, it has an angle of (360/9) =40
area of a triangle can be found by (1/2)(14)(14)(sin40)=63
total area of nonagon = 9x63=657 in^2