i think Archimedes was the first to discover pi (3.14) or leonhard euler by brichelle xD
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10 pi or 314.someting something 10 pi or 314.someting something 10 pi or 314.someting something
If you mean 3.14 for pi then the circumference is: 7*3.14 = 21.98 cm
Anglesey-born William Jones was the first person to use the Greek letter π for the ratio of a circle's circumference to its diameter.
Pythagoras was the 1st person who used the pi symbol first
Tells you the answer is 2*sqrt(314*pi) inches, which is approximately 62.82 inches Seriously though. Use metric units in maths it makes everything just work!