The perimeter of a regular hexagon is
6a2
6a
5a
4a
perimeter = 6 x side = 6 x a = 6a (let the side of a hexagon be a)
Question 9
A regular hexagon is inscribed in a circle of radius r. The perimeter of the regular hexagon is (a) 3 r (b) 6 r (c) 9 r (d) 12 r