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Happy Pi Day!

Today, March 14, is celebrated by geeks worldwide as Pi Day. Pi, as you doubtless all know, is an irrational number (no end to the digits) that represents the ratio of a circle's circumference to its diameter. It begins 3.1415926535 and that's as far as I go.
Post a coin that's related! It could be a three cent piece, one ending in 3 or 14, be creative! And enjoy free Pi in some restaurants.
Kind regards,
George
VDBCoins.com Our Registry Sets Many successful BSTs; pls ask.
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CERT VERIFICATION #31415926
According to the PCGS Certification Database, the requested certification number is defined as the following:
PCGS Coin Information
PCGS # 527039
Date, mintmark 2014-P
Denomination 25C
Variety Everglades NP 5 oz Silver - First Strike
Country The United States of America
Grade SP70
Holder Type Standard
Population 225
Pop Higher 0
PCGS Price GuideSM Value: $320
Successful transactions with : MICHAELDIXON, Manorcourtman, Bochiman, bolivarshagnasty, AUandAG, onlyroosies, chumley, Weiss, jdimmick, BAJJERFAN, gene1978, TJM965, Smittys, GRANDAM, JTHawaii, mainejoe, softparade, derryb, Ricko
Bad transactions with : nobody to date
@1630Boston Good job! I was thinking, a good estimate of Pi is 22/7. A better one, freakishly close to the exact value (less than a third of one-millionth difference), is 355/113 ...
More on that here: davidbau.com/archives/2010/03/14/the_mystery_of_355113.html
Kind regards,
George
Happy Pi Day!
Dave
@drddm what a great Bustie!
O-113a R.4
Kind regards,
George
Not mine: PCGS plate coin for CoinFacts coin 2207:
Kind regards,
George
No Pi... but I do have 3146 wheat cents in a jar....
Actually, I do not know the exact count, however, it is close.. I know there is over $30 ....Cheers, RickO
The formula for the area of a circle is pi r squared. However, it is my experience that pi r round, cornbread r square.
My War Nickels https://www.pcgs.com/setregistry/nickels/jefferson-nickels-specialty-sets/jefferson-nickels-fs-basic-war-set-circulation-strikes-1942-1945/publishedset/94452
Happy Pi day.
Have a slice of pie.
It’s got 3-1-4 in it. It’s “half” of what it used to be now that it’s a pick , and still, pi makes up half of “pick”.
``https://ebay.us/m/KxolR5
Today is my "adopted" grandson's birthday he was born on pi day 3-14-16 (rounded to 4 decimal places).
Beat me to it.
Got a pi in the sky pic?
No, but I have a ring in my ear, and it's not even pierced. Too much heavy metal, I suspect... Bajj.
``https://ebay.us/m/KxolR5
I'm not so sure about "worldwide". Much of the word does not follow the month/day convention of the US. It was just unexciting 14/3 here (yesterday).
Smitten with DBLCs.
I couldn't resist posting this here from another Pi thread:
"I've always had a problem with the "Pi R Squared thing" statement. Don't get me wrong.
I always thought that "Pi R Round..........Cornbread R Squared"."
Enjoy your Pi today.
Pete
My recent purchase...

So, you turn the circle backward, whaddya got? A circle.
No, seriously, folks, take my wife. No, really ... I did realize after I casually typed the "worldwide" above that is was a slight exaggeration. But you can celebrate Pi nonetheless, er, yesterday, if you like.
Kind regards,
George
As @toyz4geo said "pi r squared" but I say coins r round.
Small cheese pizza for $3.14 at Mellow Mushroom today.
it's crackers to slip a rozzer the dropsy in snide
@giorgio: Agreed! Just couldn't resist the wind-up!
Smitten with DBLCs.
@crazyhounddog I love that Buffalo! What an absolutely hammered strike!
Kind regards,
George
Digits 542 - 545:
Keeper of the VAM Catalog • Professional Coin Imaging • Prime Number Set • World Coins in Early America • British Trade Dollars • Variety Attribution
1839 Seated Dime Fortin-105c with pie-shaped die cracks http://www.seateddimevarieties.com/date_mintmark/1839_105cpage.htm
Dealing in Canadian and American coins and historical medals.
The Newman Portal indicates that pi was invoked in order to demonstrate that the Barber quarter has a disproportionately smaller bust than the Barber half:
https://nnp.wustl.edu/library/book/515265?page=27
Latin American Collection
I was hoping to see a planimeter used to calculate the area of Liberty's head.
Keeper of the VAM Catalog • Professional Coin Imaging • Prime Number Set • World Coins in Early America • British Trade Dollars • Variety Attribution
Far more important that a mere numeric system coincidence, March 14 marks the birth of Albert Einstein and the death of Stephen Hawking.
I have noticed even people who claim everything is predestined, and that we can do nothing to change it, look before they cross the road. Stephen Hawking "“Black Holes and Baby Universes and Other Essays.” 1993.
So wouldn't the best time for the geeks to celebrate Pi day be at 1:59:26 either AM or PM?
Never talk to pi. He'll go on forever
Do we really need that many numbers for Pi?
If the circumference of the earth were calculated using π rounded to only the ninth decimal place, an error of no more than one quarter of an inch in 25,000 miles would result.
Pickover, Clifford A. Keys to Infinity. Denver, CO: John Wiley & Sons, Inc.
Successful transactions with : MICHAELDIXON, Manorcourtman, Bochiman, bolivarshagnasty, AUandAG, onlyroosies, chumley, Weiss, jdimmick, BAJJERFAN, gene1978, TJM965, Smittys, GRANDAM, JTHawaii, mainejoe, softparade, derryb, Ricko
Bad transactions with : nobody to date
Do we really need that many numbers for Pi?
Thirty-nine decimal places of pi suffice for computing the circumference of a circle girding the known universe with an error no greater than the radius of a hydrogen atom
Successful transactions with : MICHAELDIXON, Manorcourtman, Bochiman, bolivarshagnasty, AUandAG, onlyroosies, chumley, Weiss, jdimmick, BAJJERFAN, gene1978, TJM965, Smittys, GRANDAM, JTHawaii, mainejoe, softparade, derryb, Ricko
Bad transactions with : nobody to date
A friend of mine is an engineer. He owns a small heat treating plant of 75 or so employees.
Every year on March 14th he has “Pie Day” and a local bakery brings enough pie to feed everyone on all shifts.