The area enclosed b/w the circumcircle and incircle of a regular polygon of a side `a` is `(pi\ a^2) / 4`.

The difference between the areas of the circumcircle and the incircle of a regular polygon of n sides with each side of length 2a , is pia^2 (b) (2n+1)pia^2 (c) pin a^2 (d) 2pin a^2

The ratio of the areas of the circumcircle and the incircle of a square is

the sum of the radii of inscribed and circumscribed circle of an n sides regular polygon of side a is (A) a/2 cot (pi/(2n)) (B) acot(pi/(2n)) (C) a/4 cos, pi/(2n)) (D) a cot (pi/n)

The ratio of the areas of the circumcircle and the incircle of an equilateral triangle is

The sum of radii of inscribed and circumscribed circles of an n sided regular polygon of side a is

The area of the circle and the area of a regular polygon of n sides and the perimeter equal to the circle are in the ratio of

The area of the circle and the area of a regular polygon of n sides and of perimeter equal to that of the circle are in the ratio of tan((pi)/(n)):(pi)/(n)(b)cos((pi)/(n)):(pi)/(n)sin(pi)/(n):(pi)/(n)(d)cot((pi)/(n)):(pi)/(n)

The ratio of the areas of the incircle and circumcircle of a square is