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The first time the symbol Pi was first used for Pi was in ancient Greece in their numbers. The symbol "π" was number 80 in Greece.
the first person to use pi was the amazing thomas paul pearson
Leaving in terms of pi means, through out the whole answer you have the pi symbol when you sub and compute. So basically heres an example: 2pir r=14 2pi14 28pi your answer is 28 with the pi symbol on the right but I dont know how to write it on the computer was that of help?
i think its alt+p
The congruence symbol was invented by Gottfried Leibniz.