Find the area of the regular 15​-gon with radius 8 mm.

Question

Find the area of the regular 15​-gon with radius 8 mm.

Answer 1

A=(1/2)(r^2)(sin[360/n])(n)

A=(1/2)(8^2)(sin[360/15])(15)

A=(1/2)(64)(sin[24°])(15)

A=(1/2)(64)(0.40673664)(15)

I'll leave it up to you to do the multiplication !!