the area of a regular hexagon is 18(radical 3) square inches. Find the length of the radius.

Question

my answer is 40.73 in^2.  i would like to know if that's correct 

Answer 1

The area of each constituting equilateral triangle is 3√3.

3√3 = (s²√3)/4

12√3 = s²√3

12 = s²

2√3 = s