Regular polygon and its area

Regular polygon a polygon is called a regular polygon if all its sides are equal and all its angles are equal.

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

(a) Is it possible to have a regular polygon with measure of each exterior angle as 22^(@)? b) Can it be an interior angle of a regular polygon? Why?

3.How many sides in a regular polygon has, if each of its interior angle is 135^(@) ?