A regular pentagon and a regular decagon have the same perimeter, prove that their areas are as `2:sqrt5.`

An equilateral triangle and a regular hexagon has same perimeter.Find the ratio of their areas.

Each interior angle of a regular decagon is

Symmetry of a regular pentagon.

Find the area of a regular hexagon whose perimeter is 3000ft.

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

The side length of a regular decagon is 13m, then the perimeter of a regular decagon ?

A regular hexagon has a side 8cm. Determine its perimeter and area.