Question

Two concentric circles are centered at point p. the sides of a 45 degree angle at p form an arc on the smaller circle that is the same length as an arc on the larger circle formed by the sides of a 36 degree angle at p. what is the ratio of the area of the smaller circle to the area of the larger circle? express your answer as a common fraction.

Answer 1

Together with triangles, circles comprise most of the GMAT Geometry problems.

A circle is the set of all points on a plane at the same distance from a single point ("the center").

The boundary line of a circle is called the circumference.