Who discovered circumference of circle formula?

Answer 1

The formula for the circumference of a circle, ( C = 2\pi r ) or ( C = \pi d ), has its roots in ancient mathematics, with contributions from various cultures. The Greek mathematician Archimedes is often credited with providing one of the earliest known approximations and a systematic approach to calculating the circumference around 250 BCE. However, the concept of using (\pi), the ratio of the circumference to the diameter, predates him and was recognized by ancient civilizations such as the Babylonians and Egyptians.