The ratio of the area of a regular polygon of n sides inscribed in a circle to that of the polygon of same number of sides circumscribing the same is `3 : 4`. Then the value of n is

Given that the area of a polygon of n sides circumscribed about a circle is to the area of the circumscribed polygon of 2n sides as 3:2 find n.

Prove that the area of a regular polygon hawing 2n sides, inscribed in a circle, is the geometric mean of the areas of the inscribed and circumscribed polygons of n sides.

The number of diagonals of a polygon of 15 sides is:

The number of diagonals of a polygon of 20 of sides

If r is the radius of inscribed circle of a regular polygon of n-sides ,then r is equal to

The number of pairs of diagonals of a regular polygon of 10 sides that are parallel are

If a regular polygon of n sides has circum radius R and inradius r then each side of polygon is:

The interior angle of a regular polygon is 156^0dot Find the number of sides of the polygon.

If the difference between an exterior angle of a regular polygon of 'n' sides and an exterior angle of another regular polygon of '(n+1)' sides is equal to 5^(@) , find the value of 'n'.

The number of triangles that can be formed form a regular polygon of 2n + 1 sides such that the centre of the polygon lies inside the triangle is