Approximate Pi Day

Approximate Pi DayHappy Approximate Pi Day!

22nd July – 22/7 A reasonable approximation for Pi – good to 2 decimal places.

If you want a better approximation for Pi you could use 333/106 which is good to 4 decimal places, or, for even more accuracy, use 355/113 which is good to 6 decimal places.

But you can’t write Pi as an exact fraction as it is an irrational number.

Irrational numbers are real numbers that can’t be written as an exact fraction. It has never ending, never repeating numbers to the right of the decimal point.

22/7 – Approximate Pi Day – Enjoy!

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  1. Posted 22/07/2013 at 11:33 am | Permalink

    Here is a contrarian view of π day in general:

  2. Jo
    Posted 22/07/2013 at 8:10 pm | Permalink

    Excellent resource. Thank you for sharing.

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  • By Happy 11111011111 on 01/01/2015 at 11:17 am

    […] of course, every year we have Approximate Pi day on 22/7 and the Root of All Evil Day on 25th […]

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