Description & Comments



There are three semicircles: one big, one medium-sized, and one small.
The small semicircle is contained in the medium-sized semicircle.
The medium-sized semicircle is contained in the big semicircle.
Their three diameters are on the same line.
All semicircles go through the center of the big semicircle.

COMMENT: We suppose that the radius of the big semicircle is \(1\) because it is easy to rescale lengths and areas.