Pi is irrational and transcendental. It has no exact value. If you used 22/7, it is accurate to within .00126.
Pi has been calculated to 10 trillion, yes trillion, decimal places and still has no pattern.
Maybe more than that by now. Someone is always playing around with it to see if they can break the new record. Like finding the largest prime.
When I used Pi in the field, I used what was on the calculator. It gives 3.14159265359
Try **355/113=3.14159292035**. It is accurate to within .000000266
22/7 and 355/113 and others, are just fractional approximations. Some better than others. **86953/27678** is a very good one.
As a matter of fact, 355/113 has been given a name because of its accuracy and significance. It is called **Milu**. I believe there is an umlat above the u. |