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yeti
Posts: **732**

\o/ **22/7** \o/

Do you have stories about PI approximations?

Easy to remember and/or just funny ones?

What about**355/113**?

A bit longer than**22/7** but more accurate and easy to remember via **113355**.

Break it in halves and divide the bigger by the smaller one.

Or look at the 32bit unixcalypse:

The last 32bit unixdate is**2038-01-19 03:14:07 UTC**.

**PI±ε** obviously hides everywhere!

So**date +%H.%M -d@`printf '%d' 0x7FFFFFFF`** yields **03.14**

*(Needs the GNUish flavour of `date`.)*

20200721-1616-UTC:

I just stumbled over "Flipping A Coin 10,000 Times With A Dedicated Machine" which should open a door to PI via "Hey! You Can Find Pi With a Random Walk. Here's How"

Do you have stories about PI approximations?

Easy to remember and/or just funny ones?

What about

A bit longer than

Break it in halves and divide the bigger by the smaller one.

Or look at the 32bit unixcalypse:

The last 32bit unixdate is

So

20200721-1616-UTC:

I just stumbled over "Flipping A Coin 10,000 Times With A Dedicated Machine" which should open a door to PI via "Hey! You Can Find Pi With a Random Walk. Here's How"

## Comments

824If you're boneheaded enough, π hides everywhere:

Interestingly, my casio fx-9860GII (well, a modded fx-9750GII, really) doesn't seem to have that problem at all. Then again, that runs on a 50 MHz SH4 with some 256K(?) RAM, whereas the non-graphing calcs probably use the tiniest microcontroller they can get away with.

732(I mean the calculator!)Obviously nobody understands what they are doing.

𝕭𝖚𝖙 𝖓𝖔𝖜 𝖋𝖔𝖗 𝖘𝖔𝖒𝖊𝖙𝖍𝖎𝖓𝖌 𝖒𝖆𝖞𝖇𝖊 𝖓𝖔𝖙 𝖘𝖔 𝖈𝖔𝖒𝖕𝖑𝖊𝖙𝖊𝖑𝖞 𝖉𝖎𝖋𝖋𝖊𝖗𝖊𝖓𝖙...

732...and the bonus track...

Maybe the thread needs a new title like "

PI is everywhere"?73243019,738131Wow, very impressive; this wasn't really on my radar until I was 16, when someone bet me $5 I couldn't memorize pi to 100 decimal (I made them specify decimal; I offered to do it in binary) places in 5 minutes. I won, and still remember (depending on the day) 25-40 of them. It's a great party trick, as well as most element masses, square roots, e, c, metric/imperial conversions, etc., to 7 or 8 places. I never expended any effort on these; I just remember them, well, because.

My story about pi approximation is that, in third grade, my teacher told us that pi is a non-repeating decimal, and that it was equal to 22/7. Well, I just had to try, so, on paper (this was well before hand-held calculators), I divided it out and found out that it repeats (3.142857 142857 142857...). Confronted with this, my teacher was confounded and had to ask an 8th grade math teacher what was going on here. Fortunately, it was near the end of the school year, because I realized I couldn't trust anything that teacher told me, and I went into 4th grade with *much* more skepticism about everything I was told. I'm still that 4th-grader.

732Loosely related:

Fun with splitting hairs about PI:

*sigh!* Her maths series ended.430Stephen Hawking died on March 14th, 2018.

3/14 is Pi Day.

92732