Description & Comments



The figure contains a big circle, two congruent small circles and two congruent circular arcs.
The radius of the small circles is a quarter of the radius of the big circle.
The circular arcs belong to two semicircles whose radius is half of the radius of the big circle.
The centers of the two small circles are the centers of the two semicircles.
The center of the three circles are on one same diameter of the big circle.
This diameter is covered by the two diameters of the semicircles.
The two semicircles are on opposite side with respect to that diameter.
COMMENT: We suppose that the radius of the big circle is \(1\) because it is easy to rescale lengths and areas.