It's one of the first formulas I learned too, but I'm not sure if I learned "circumference of the circle" before or after it.
I remember using Arabic symbols: "نق" instead of "r" and "ط" instead of "π."
!PIZZA
I liked your #FunFact about the earth.~
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I read a bit of the history and the article was talking like how universal pi is since it originated from the Greeks. Then you showed me the variations of the mathematics symbols too. Cool!
Glad I taught you something new~
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