Question

$defination \: of \: \pi \: and \: who \: invented \: it$
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Answer 1

Answer:

${\huge {\purple {\mathcal {\underline {\overline {\boxed {Answer}}}}}}}$

Mathematicians began using the Greek letter π in the 1700s. Introduced by ᴡɪʟʟɪᴀᴍ ᴊᴏɴᴇs ɪɴ 1706, use of the symbol was popularized by Leonhard Euler, who adopted it in 1737. An eighteenth-century French mathematician named Georges Buffon devised a way to calculate π based on probability.