Question

why does the decimal 3.14 have a special name Pi ?​

Answer 1

Step-by-step explanation:

It was not until the 18th century — about two millennia after the significance of the number 3.14 was first calculated by Archimedes — that the name “pi” was first used to denote the number. ... “He used it because the Greek letter Pi corresponds with the letter 'P'… and pi is about the perimeter of the circle.”