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call HART crazy.. but
In case you were unaware, Today was Albert Einstein’s birthday, born March 14, 1879
March 14th is also known as PI day
What is the exact value for Pi at this moment?
The number that we call pi is irrational: its decimal digits go on forever without repetition. Being the ratio of a circle’s circumference to its diameter, pi never changes: it is universally and eternally itself*, although it is impossible to write down perfectly.
The number of digits to which pi has been computed is itself now into 13 figures: that is to say, thousands of thousands of millions of decimal places. The links below can show you pi to millions of digits.
Here, meanwhile, is pi to 100 significant figures:
3.14159265358979323846264338327950288419716939937510582097
4944592307816406286208998628034825342117067…
The improper fraction 355/113 is an approximation of pi accurate to six decimal places.
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* In other words, this ratio is the same for any two circles. I could draw a circle of diameter 1cm, and its circumference would be pi centimetres. You might draw one with diameter 2.5cm and circumference 7.53539… cm. But they’d both have the same ratio: 3.14159… / 1 = 7.53539… / 2.5 . So this number is a constant, so it has been given a name: pi.
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