Pi (π) is the circumference of a circle divided by its diameter. This ratio is always the same, for every circle of every size. And it has an infinite number of decimal places. π is used for calculations involving diameter, volumes of cylinders, the double helix of DNA, waves, ripples, and spectra, the pupil of the eye, and rainbows, to name just a few. Here are some digits:
3.14159265358979323846264338327950288419716939937510582097494459230781640
62862089986280348253421170679821480865132823066470938446095505822317253
5940812848111745028410270193852110555964462294895493038196442881097566593
344612847564823378678316527120190914564856692346034861045432664821339360
7260249141273. . .
It’s only once every 100 years that we can celebrate Pi day to ten digits. So celebrate Pi day on March 14, 2015 at 9:26 am/pm and 53 seconds: 3/14/15 9:26:53 (3.141592653)!
Belleyre Books 
How interesting. Thanks for sending!
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Very Interesting. Thanks for sharing !