Celebrate Pi

Today is 3/14. Happy Pi day!

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. . .

If you’re using Excel, the function PI() represents π to 15 digits!

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