it is a number 3.14159265358979323846264338327950288... it's just a lot of numbers after that
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pi is not an abbreviation. It is a letter of the Greek alphabet symbol that symbolises one particular ratio.
what Englishman introduced the pi symbol, and in what year
No. the symbol for pi stems off of the Greek letter pi, probably due to the fact that the discoverer of pi was Greek.
Pythagoras was the 1st person who used the pi symbol first
The symbol 'π' is the Greek letter 'p' which is called "pi", like our 'p' is called 'pee'.