A regular hexagon & a regular dodecagon are inscribed in the same circle if the side of the dodecagon is `(sqrt(3)-1)` then the side of the hexagon is

A regular hexagon and regular dodecagon (12 sides) are inscribed in the same circle.If the side of the dodecagon is sqrt(3)-1. Then the side of the hexagon is:

if a regular hexagon and regular octagon are inscribed in a circle of radius R then the ratio of areas A_(1), and A_(2), is

What is the area of a regular hexagon inscribed in a circle of radius r ?