## A Conversation for Pi

### A quick and dirty approximation

Gordon, Ringer of Bells, Keeper of Postal Codes and Maps No One Can Re-fold Properly Started conversation Aug 10, 2002

If you need to very quickly calculate pi to a few decimal places, you can use 22/7 to two significant decimal places.

### A quick and dirty approximation

Sir Doug Posted Aug 29, 2002

Another fine approximation can be obtain by taking the first three odd digits and doubling them, like so:

1 1 3 3 5 5

Then, put the last three over the first:

355 / 113

This gives 3.14159..., six accurate decimals of pi.

### A quick and dirty approximation

Uncle Ghengis Posted Sep 12, 2002

I always use the mnemonic "how I wish I could remember pi" - counting the number of digits in each word gives: "3 1 4 1 5 8 2".

### A quick and dirty approximation

Uncle Ghengis Posted Nov 12, 2002

Ah yes. Lets say "characters", then shall we?

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### A quick and dirty approximation

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