In the chinese symbol for yin and yang, the dash shows two semicircles formed by the curve seperating yin(dark) and yang(light). Is the circumference of the entire yin and yang symbol, less than, grea

In the chinese symbol for yin and yang, the dash shows two semicircles formed by the curve seperating yin(dark) and yang(light). Is the circumference of the entire yin and yang symbol, less than, greater than, or equal to the perimeter of the yin?