zaterdag 14 maart 2015

Pi Day

Pi = 355 /113

As a teacher in electronics I use this accurate fraction for Pi,
when I use a calculator without a key for Pi.
I have been looking for a fraction with one or two prime numbers.
I came up with 113 as divisor, which is a prime number.

The numbers are easy to remember.
The accuracy is better than one millionth. 10-6.

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