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What Is Your Favorite Pi Math Question? [Vanity]
FreeRepublic ^ | March 14, 2019 | Reno89519

Posted on 03/14/2019 2:04:52 PM PDT by Reno89519

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Ah, that number: π = 3.14159 26535 89793 23846 26433 83279 50288 41971 69399 37510 ...

And for trivia, what is the largest number of digits you know or have used in any calculation?

Me, I know it to 15 decimal places and one of my twin sons knows it to over 50. He runs them off so fast it is hard to tell.

1 posted on 03/14/2019 2:04:52 PM PDT by Reno89519
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To: Reno89519

Pi Day? Make mine Boston Cream please.


2 posted on 03/14/2019 2:07:46 PM PDT by rhubarbk (Winning, Winning, Winning . . . MAGA it's a beautiful thing!!!)
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To: Reno89519

This one is for me as your twin son know fewer digits than I have years.

3 posted on 03/14/2019 2:08:17 PM PDT by Ingtar
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To: Reno89519

Pi related ....

If a hole measures 6 feet across and 3 feet deep, how big is half a hole?


4 posted on 03/14/2019 2:08:34 PM PDT by taxcontrol
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To: Reno89519

Why is it never-ending?


5 posted on 03/14/2019 2:08:39 PM PDT by CaptainK ('No collusion, no obstruction, he's a leaker')
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To: Reno89519

I’m not trying to Rain Cloud your post, but my only question about Pi is this: What is it used for in today’s world, except as an Open Set measurement of long ‘numbers’?
**P.S., I’m not that good at math, and have only rarely enjoyed it.


6 posted on 03/14/2019 2:09:50 PM PDT by lee martell
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To: Reno89519
If there are infinite universes, one exists where Pi is rational.

What does a wheel look like in that universe.

(My students always enjoyed this question.)

7 posted on 03/14/2019 2:12:52 PM PDT by Aevery_Freeman (Tired of kissing Banker Butt! Hurrah, Andrew Jackson!)
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To: CaptainK
Why is it never-ending?

Because Pi is an irrational number.

8 posted on 03/14/2019 2:13:57 PM PDT by LucyT
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To: Reno89519

Pie are squared.
Cornbread are round......................


9 posted on 03/14/2019 2:14:22 PM PDT by Red Badger (We are headed for a Civil War. It won't be nice like the last one....................)
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To: lee martell
At pizza sizes, not important, but at orbits, say for the International Space Station, which averages around 248 miles, a few extra decimal places makes an incredible difference.

For example, if you know the speed (around 17,500 mph) and altitude, you could calculate when it will be over a specific point as it orbits the Earth.

Or, what about a pinpoint laser to bounce off Mars, like a shotgun, you could calculate how much to lead that laser.

10 posted on 03/14/2019 2:17:50 PM PDT by Reno89519 (No Amnesty! No Catch-and-Release! Just Say No to All Illegal Aliens! Arrest & Deport!)
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To: Reno89519
Image result for pi day meme
11 posted on 03/14/2019 2:18:20 PM PDT by Responsibility2nd
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To: Reno89519

Why does PI show up so many times in the pyramid calculations.


12 posted on 03/14/2019 2:18:41 PM PDT by mountainlion (Live well for those that did not make it back.)
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To: LucyT
There are never ending rational numbers too, for example
1/3 = 0.333333333333333333... or
1/7 = 0.142857142857142857...

13 posted on 03/14/2019 2:23:06 PM PDT by BitWielder1 (I'd rather have Unequal Wealth than Equal Poverty.)
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To: lee martell
For one example, "pi" is an integral (ha ha) part of Gauss's Law, and of Ampere's Law, which partly describe electromagnetism. Designing the computer you're typing on, and the communications systems that form the internet by which you pose your question and I answer it, depend on a proper understanding of that field (ha ha). Pi is also involved in the Schroedinger equation, fundamental to quantum mechanics. Design of solid-state devices, among many other things, is at least partly dependent upon understanding that field.

So, aside from the area and circumference of circles, and the volume and surface area of spheres ... pi may be hidden from your view, but it is fundamental to the modern world you may well take for granted.

And, by the way, eiπ + 1 = 0

14 posted on 03/14/2019 2:24:45 PM PDT by NorthMountain (... the right of the peopIe to keep and bear arms shall not be infringed)
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To: NorthMountain
e + 1 = 0

Love that one.

15 posted on 03/14/2019 2:27:40 PM PDT by NobleFree ("law is often but the tyrant's will, and always so when it violates the right of an individual")
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To: taxcontrol
how big is half a hole?

The top half or the bottom half?

16 posted on 03/14/2019 2:29:30 PM PDT by grobdriver (BUILD KATE'S WALL!)
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To: Reno89519

Memorize this mnemonic and you can cite pi to twenty places. The number of letters in each word represents a digit of pi.

How I wish I could relocate pi,
“Eureka!” cried the great inventor,
Christmas pudding, Christmas pie,
Is the problem’s very center.


17 posted on 03/14/2019 2:30:42 PM PDT by sparklite2 (Don't mind me. I'm just a contrarian.)
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To: Reno89519

You only need 39 or 40 digits of pi to calculate the circumference of the observable universe to within the width of a hydrogen atom.

https://www.vox.com/2016/4/2/11350518/nasa-digits-pi


18 posted on 03/14/2019 2:32:11 PM PDT by Dr. Zzyzx
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To: Reno89519

19 posted on 03/14/2019 2:33:02 PM PDT by ETL (Obama-Hillary, REAL Russia collusion! Uranium-One Deal, Missile Defense, Iran Deal, Nukes: Click ETL)
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To: Reno89519

I remember when Kirk (or was it Spock?) ordered the computer to calculate Pi.


20 posted on 03/14/2019 2:34:36 PM PDT by yarddog
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