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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.

en.wikipedia.org/wiki/Pi

Any complex number, say z, can be expressed using ... In the polar coordinate system, one number ...

www.piday.org/million

One Million Digits of Pi. 3.... T-Shirts. More Pi Stuff. Videos: Music Video: What is the value of Pi? Pi Sightings: Great Pi Day Activities for Teachers.

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

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

www.factmonster.com/math/numbers/first-thousand-digits-pi

The number known as pi (π) has fascinated people for millenia. The digits to the right of its decimal point can keep going forever, and there is absolutely no ...

www.mathsisfun.com/numbers/pi.html

circle radius=1, half circumference=pi. Draw a circle with a radius of 1. The distance half way around the circle is 3.14159265... a number known as Pi ...

www.wired.com/2016/03/six-things-probably-didnt-know-pi

Mar 14, 2016 ... No matter how big your circle, the ratio of circumference to diameter is the value of Pi. Pi is an irrational number—you can't write it down as a ...

www.angio.net/pi/digits.html

Displays the first 10000 digits of pi on screen, with links to download 10, 50, 100, ..., and up to 1 million digits, with ... He also has a lot of other large numbers.

time.com/4699479/pi-day-2017-history-origins

Mar 14, 2017 ... The significance of the number 3.14—the inspiration for Pi Day on March 14— was known in Ancient Greece, but it wasn't called "pi" till later.

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 ...