# Who Discovered Pi?

It is unknown how pi was discovered. We do know it has been known for over 4000 years. If you measure the circumference of any circle and divide it by the diameter, you will get pi. In ancient times, the most frequent approximations of pi have been 3, 22/7 or 13/4.
The earliest known textually evidenced approximations of pi date from around 1900 BCE; they are 25/8 (Babylonia) and 256/81 (Egypt), both within 1% of the true value.
The Greek letter pi was first used to represent the ratio of the circumference of a circle to its diameter in 1709 by mathematician William Jones.
The Egyptians and Babylonians were the first people to use the number of pi. However, the first person to use the modern symbol for pi was William Jones in 1706.
Q&A Related to "Who Discovered Pi"
 The person who first discovered pi was a mathematician named William Jones in 1706. Jones was a close friend of Issac Newton. Jones was from Wales. http://answers.ask.com/Science/Mathematics/who_fir...
 Pi was discovered ny the ancient Greeks around 1900 B.C. http://wiki.answers.com/Q/Where_was_pi_discovered
 1 Begin freshening your understanding of the geometry of the circle in a plane. You know a lot about the point, plane and space, and they're not even defined in the study of geometry http://www.wikihow.com/Discover-Pi-for-Yourself-Us...
 Discovery of pi is regularly attributed to Archimedes of Syracuse, but mention was made http://www.chacha.com/question/who-discovered-the-...
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