Find area of Polygon by Stair Method

Area of a polygon

Find the Area of polygon

Find the area of regular polygon ? If the area of the circle is A_(1) and area of a regular pentagon inscribed in the circle is A_(2); then find the ratio (A_(1))/(A_(2))

The interior angle of polygon are in A.P.the smallest angle is 75^(0) and the common difference is 10^(@). Find the numberof sieds of the polygon.

r -sided polygons are formed by joining the vertices of an n -sided polygon.Find the number of polygons that can be formed,none of whose sides coincide with those of the n - sided polygon.

A circle of radius r is inscribed in a regular polygon with n sides (the circle touches all sides of the polygon). If the perimeter of the polygon is p, then the area of the polygon is

Area OF triangle ||Area OF polygon || Condition OF Collinearity OF 3 points

In an n-sided regular polygon, each exterior angle is 72^(@) . Find the sum of all the interior angles of the polygon.

In an n-sided regular polygon, each interior angle is 144^(@) . Find the number of the sides of the polygon.