Pi Approximation Day

[Dan C]

(07-24-2022 10:58 AM)Maximilian Hohmann Wrote:  Hello!

(07-24-2022 09:37 AM)Dan C Wrote:  How many decimals in the PI are needed to get acceptable results in practical everyday calculations? Is 3.14 enough ? Or do you have to use more? ( i think you have, but how many?)

For my own personal everyday applications involving Pi (like tinkering around the house and garden) 3.0 is a good enough approximation :-)

At work, many years ago, we were doing microvave imaging measurements and calculations. These involved propagation models with many e^i*Pi terms. Even using (then) state-of-the art measuring equipment (mostly from Hp of course, Agilent had not been sourced out then) no more then 4 (or maybe 5 for theoretical calculations) decimal places were required. Everything else would have been drowned in the noise anyway.

Regards
Max

Thanks for your input! So in real life calculations you are fine with PI at 3.1415, and that will do in most situations.