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If the diameter of a circle is 1 then its circumference is pi. The value of pi 3.1415926535897932384626433832795028841971693993751058209749445 923078164062862089986280348253421170679821480865132823066470938.... The earliest evidenced conscious use of an accurate approximation for the length of a circumference with respect to its radius is of 3+1/7th in the designs of the Old Kingdom pyramids in Egypt. Until the second millennium, it was known to fewer than 10 decimal digits.
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Can pi be negative?
No. Pi is a set number, if it were negative (-3.14159...) it would not represent the ratio of radius to circumference.
What Swiss mathematician was PI popularized by?
The symbol π was popularized by the Swiss mathematician Leonhard Euler in the early 18th century to represent this ratio.
What is the pi root of pi?
(pi)(1/pi)=1.4396 ...
How many significant figures in pi 3.14159...?
"Pi" is an irrational number. No series of digits can represent its value exactly, whether written as a fraction or as a decimal. The decimal can be extended to any number of significant figures, no matter how large, and never ends.
What is pi times pi divided by pi plus pi minus pi times pi?
the same as pi squared, which is 9.86960440109
