What is the full number of pi or 3.14?

Pi is an infinite number which is called the "Archimedes constant." His estimation equals to 2 10/71< pi< 22/7. Archimedes (287 B.C.E-212 B.C.E.) of Syracuse, Sicily (then part of a greater Greece) is to be known as one of the greatest mathematicians ever to live. Archimedes determined the accuracy of his approach by comparing the perimeter of the circumscribed polygon with the perimeter of a regular polygon with the same number of sides inscribed inside the circle. Using a polygon with 96 sides, he computed the fractional range. In schools, the number 3.14159 is sufficient for calculation.