Regular pentagons are inscribed in two circles of radius `5 `and `2` units respectively. The ratio of their areas is

Find the area of a square inscribed in a circle of radius 5 cm.

The area of a square inscribed in a circle of radius 8 cm is:

The area of the square inscribed in a circle of radius 8 cm 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

Area of an equilateral triangle inscribed in a circle of radius a is

A regular hexagon is inscribed in a circle of radius 5 cm. If x is the area inside the circle but outside the regular hexagon, then which one of the following is correct?