zaterdag 14 maart 2015
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.