Today, 14th March (sometimes written 3.14) is pi day (π). It’s extra special this year because it’s 2015 and the date can be written as 3.14.15 which is the first five digits of π. The number π is a mathematical constant, and is calculated from the ratio of a circle’s circumference to it’s diameter. For more information about π see the Wikipedia article here. To help celebrate π day and for more fascinating facts visit the website www.piday.org
π is an irrational number. Any number that cannot be expressed as a ratio of two integers is described as irrational. Their decimal representation neither terminates nor infinitely repeats but extends infinitely without repetition and π is such an example.
For your interest and pleasure here is π to one hundred decimal places:
3.1415926535 8979323846 2643383279 5028841971 6939937510 5820974944 5923078164 0628620899 8628034825 3421170679 …
– Your Joyful Benefactor