Find the Radius of a circle with a circumference of 60. Using Trace (22.1875399) & Trac (21.1875399):60 / 6 = 10 10 / 22.1875399 = 0.45070341484 0.45070341484 x 21.1875399 = 9.54929658498 Using pi (3.14159265):60 / 3.14159265 = 19.09859319285 19.09859319285 / 2 = 9.54929659642 *The Trace & Trac result is more accurate. Even if pi is taken to the next place value (3.141592653), the above result using the Trace & Trac is still more accurate-- pi must be taken to 3.1415926535 to achieve a more accurate result (the Trace & Trac can also be extended but it is rarely done). |

The Radius of a Circle is the same length as the Face of an inscribed Hexagon |

The Trace & Trac relation originates in an inscribed Hexagon |