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Tuesday, 28 August 2012


*. Pi is an irrational number. It means that it cannot be written as the ratio of two integer numbers. 22/7 is a popular one used for Pi but it is only an approximation, which equals to 3.142857143...
*. Another characteristic of pi as an irrational number is the fact that it takes an infinite number of digits to give its exact value , i.e. you can never get to the end ofit.

. One of the most accurate fractions for Pi is 104348 / 33215. it is accurate to 0.00000001056%
*. First 100 digits
3.1415926535 8979323846 2643383279 5028841971 6939937510 5820974944 5923078164 0628620899 8628034825 3421170679...
*. 1.2411 trillion digits (1,241,100,000,000) digits of pihave been dicovered
*. You can determine your hat size by measuring the circumference of your head, then divide by Pi and round off to the nearest one_eighth inch.
*. The height of an elephant (from foot to shoulder) = 2 *Pi * the diameter of its foot.
*. The Babylonians, in 2000 B.C. were the first people known to find a value for Pi.
*. Pi day is celebrated on March 14 at the Exploratorium in San Francisco (March 14 is 3/14) at 1:59 PST which is 3.14159.
*. Pi Approximation Day is on the 22 / 7 - that is, July 22. For the past few years, people at Chalmers University have celebrated it.


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