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Pi - Wikipedia

en.wikipedia.org/wiki/Pi

The number π is a mathematical constant, the ratio of a circle's circumference to its diameter, .... The set of complex numbers at which exp(z) is equal to one is then an (imaginary) arithm...

100,000 Digits of Pi

www.geom.uiuc.edu/~huberty/math5337/groupe/digits.html

100,000 Digits of Pi Pi Logo. 3.141592653589793238462643383279502884197169399375105820974944592307816406286  ...

PI - Math.com

www.math.com/tables/constants/pi.htm

History | Pi web sites| Do it yourself Pi |The Digits| Formulas ... that there was a fixed ratio of circumference to diameter that was approximately equal to three.

What does Pi equal? | Reference.com

www.reference.com/math/pi-equal-d6665d91220058dc

The number Pi, symbolized by a Greek letter, has a constant value that approximately equals 3.14159. Pi is an irrational number, which means it cannot be ...

Where Does 'PI' Come From?

britton.disted.camosun.bc.ca/pi/piorigin/piorigin.html

You know what 'PI' is ... it's a number with the value 3.14, and it's used to find the circumference and area of a circle. But did you ever wonder where PI came ...

What is Pi? - Live Science

www.livescience.com/29197-what-is-pi.html

Apr 30, 2013 ... Pi equals the circumference divided by the diameter of a circle. Credit: YuryZap ... There is no exact value, seeing as the number does not end.

geometry - Why is $\pi $ equal to $3.14159...$? - Mathematics Stack ...

math.stackexchange.com/questions/17366/why-is-pi-equal-to-3-14159

Jan 13, 2011 ... Does not answer anything. It is like answering: "why is a = b?". With: "because if you take a and compare to b they will be equal! Actually, it is ...

What is Pi? - Geometry Made Easy! - Quatr.us

quatr.us/math/geometry/pi.htm

May 2016 - Pi is a number that is approximately equal to 3.14. ... Usually in math we write pi with the Greek letter π, which is the letter "p" in Greek. ..... @ Anonymous, try starting by explaining to me what you do understand about pi, and I'll see ...

What Makes Pi So Special? | What Does Pi Mean? - Live Science

www.livescience.com/34132-what-makes-pi-special.html

Aug 9, 2012 ... Pi appears all over math and nature, not just in circles. ... numbers have no common factor — that they are "relatively prime" — is equal to 6/π<sup>2</sup>.

pi to 10,000 digits - Department of Mathematics, University of Utah

www.math.utah.edu/~pa/math/pi.html

pi=3.14159 26535 89793 23846 26433 83279 50288 41971 69399 37510 58209 74944 59230 78164 06286 20899 86280 34825 34211 70679 82148 08651 ...

Answer
The value of pi to 5 decimal places is 3.14159. Pi is an irrational number, so it cannot be expressed as an exact fraction and its decimal representation has no end.
The Greek letter pi was first used to represent the ratio of the circumference of a circle to its diameter in 1709 by mathematician William Jones.
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Pi - Math is Fun

www.mathsisfun.com

all the way around the circle) will be Pi. Pi (the symbol is the Greek letter π) is: ... In fact π is not equal to the ratio of any two numbers, which makes it an irrational  ...

What does Pi equal in algebra? | Reference.com

www.reference.com

According to Math Open Reference, pi is a mathematical constant obtained by dividing the circumference of any circle by its diameter. Pi is about 22/7 or 3.142.

One Million Digits of Pi · Pi Day

www.piday.org

One Million Digits of Pi. 3.... Pi Coffee Mug ... Videos: Music Video: What is the value of Pi? rap-music-video · Videos: “Lose Yourself in the Digits” Pi Day Rap.