Question

Find the area of a regular 12-sided polygon inscribed in a circle of radius
8 cm.

Answer 1

area of n sided polygon inscribed in a circle is

A = (1/2)nr²sin(360/n) (r = radius of circle)

A = (1/2)12*8²*sin30

= 1/2*12*64*1/2

A = 192 square unit