# data[].attributes.body
21,9911455/7===3.14159221

21.9911485/7===3.1415926

Must Be on top

# data[].attributes.body
Wiki?

# data[].attributes.body
21.991145/7=== 3.141592143

21.9911486/7=3.141592657

21.99114857/7=3.141592653

# data[].attributes.body
The father of calculus (meaning “pebble used in counting” from calx or “limestone”), Isaac Newton calculated pi to at least 16 decimal places.l

# data[].attributes.body
An Eighteenth century French mathematician named Georges Buffon devised a way to calculate pi based on probability.

# data[].attributes.body
One of the countries is ancient Egypt

# data[].attributes.body
isn't Psi like pressure

pressure per square inch

# data[].attributes.body
1. The first million decimal places of pi consist of 99,959 zeros, 99,758 1s, 100,026 2s, 100,229 3s, 100,230 4s, 100,359 5s, 99,548 6s, 99,800 7s, 99,985 8s, and 100,106 9s.a

# data[].attributes.body
Life is irrational.

# data[].attributes.body
Albert Einstein

# data[].attributes.body
pi was adopted for the number from the Greek

word for perimeter "περίμετρος", first by William Jones

# data[].attributes.body
What famous mathematician’s birthday is on Pi Day?

# data[].attributes.body
But, I mean like is there another name for Pi.

# data[].attributes.body
Satisfy curiosity of man. Further his intellect. That is Pi's main purpose.

Done.

# data[].attributes.body
Yes Yuni, but why learn about it more than just that it is a really, really long number that appears in nature more than once?

# data[].attributes.body
Maybe Babylonians not Archimedes?

# data[].attributes.body
The first calculation of pi was carried out by Archimedes of Syracuse

# data[].attributes.attachment_link.description
Search the world's information, including webpages, images, videos and more. Google has many special features to help you find exactly what you're looking for.

# data[].attributes.body
In the Greek alphabet, π (piwas) is the sixteenth letter. In the English alphabet, p is also the sixteenth letter.

# data[].attributes.body
It's just an important part of the universe and very interesting, because it is a rule that occurs constantly throughout.

# data[].attributes.attachment_link.readable_text
Pi is an irrational number that's crucial to many mathematical formulas.

Credit: MidSummerDay / Shutterstock.com

Understanding pi is as easy as counting to one, two, 3.1415926535...

OK, we'll be here for a while if we keep that up. Here's what's important: Pi (π) is the 16th letter of the Greek alphabet, and is used to represent the most widely known mathematical constant.

By definition, pi is the ratio of the circumference of a circle to its diameter. In other words, pi equals the circumference divided by the diameter (π = c/d). Conversely, the circumference of a circle is equal to pi times the diameter (c = πd). No matter how large or small a circle is, pi will always work out to be the same number. That number equals approximately 3.14, but it's a little more complicated than that. [ 10 Surprising Facts About Pi]

Pi is an irrational number, which means that it is a real number that cannot be expressed by a simple fraction. That's because pi is what mathematicians call an "infinite decimal" - after the decimal point, the digits go on forever and ever.

When starting off in math, students are introduced to pi as a value of 3.14 or 3.14159. Though it is an irrational number, some use rational expressions to estimate pi, like 22/7 of 333/106. (These rational expressions are only accurate to a couple of decimal places.)

While there is no exact value of pi, many mathematicians and math fans are interested in calculating pi to as many digits as possible. The Guinness World Record for reciting the most digits of pi belongs to Rajveer Meenaof India, who recited pi to 70,000 decimal places (while blindfolded) in 2015. Meanwhile, some computer programmers have calculated the value of pi to more than 22 trillion digits.

Calculations like these are often unveiled on Pi Day, a pseudo-holiday that occurs every year on March 14 (3/14).

The first 100 digits of pi are:

3.14159 26535 89793 23846 26433 83279 50288 41971 69399 37510 58209 74944 59230 78164 06286 20899 86280 34825 34211 7067

The website piday.org has pi listed to the first million digits.

Pi has been known for nearly 4,000 years and was discovered by ancient Babylonians. A tablet from somewhere between 1900-1680 B.C. found pi to be 3.125. The ancient Egyptians were making similar discoveries, as evidenced by the Rhind Papyrus of 1650 B.C. In this document, the Egyptians calculated the area of a circle by a formula giving pi an approximate value of 3.1605. There is even a biblical verse where it appears pi was approximated:

And he made a molten sea, ten cubits from the one brim to the other: it was round all about, and his height was five cubits: and a line of thirty cubits did compass it about. - I Kings 7:23 (King James Version)

The first calculation of pi was carried out by Archimedes of Syracuse (287-212 B.C.). One of the greatest mathematicians of the world, Archimedes used the Pythagorean Theorem to find the areas of two polygons. Archimedes approximated the area of a circle based on the area of a regular polygon inscribed within the circle and the area of a regular polygon within which the circle was circumscribed. The polygons, as Archimedes mapped them, gave the upper and lower bounds for the area of a circle, and he approximated that pi is between 3 1/7 and 3 10/71.

Pi began being symbolized by the pi symbol (π) in the 1706 by the British mathematician William Jones. Jones used 3.14159 as the calculation for pi.

In basic mathematics, pi is used to find the area and circumference of a circle. Pi is used to find area by multiplying the radius squared times pi. So, in trying to find the area of a circle with a radius of 3 centimeters, π3 ² = 28.27 cm. Because circles are naturally occurring in nature, and are often used in other mathematical equations, pi is all around us and is constantly being used.

Pi has even trickled into the literary world. Pilish is a dialect of English in which the numbers of letters in successive words follow the digits of pi. Here's an example from "Not A Wake," by Mike Keith, the first book ever written completely in Pilish.

Now I fall, a tired suburbian in liquid under the trees,
Drifting alongside forests simmering red in the twilight over Europe.

Now has 3 letters, I has 1 letter, fall has 4 letters, a has 1 letter, and so on, and so forth.

This article was updated on Oct. 19, 2018 by Live Science Senior Writer, Brandon Spektor.

# data[].attributes.attachment_link.description
Understanding pi is as easy as counting to one, two, 3.1415926535... OK, we'll be here for a while if we keep that up. Here's what's important: Pi (π) is the 16th letter of the Greek alphabet, and is used to represent the most widely known mathematical constant.

# data[].attributes.body
but psi?

# data[].attributes.body
why?

# data[].attributes.body
Pi in the bible----------------------

1 Kings 7:23

New International Version (NIV)

23 He made the Sea of cast metal, circular in shape, measuring ten cubits from rim to rim and five cubits high. It took a line of thirty cubits[a] to measure around it.

# data[].attributes.body
Golden ratio is a particular ration that occurs everywhere in nature.

# data[].attributes.body
What does that mean?

# data[].attributes.body
Pi is the ratio of the circumference of a circle to its diameter

# data[].attributes.body
Golden ration = psi.

# data[].attributes.body
People made it a holiday, and it was first celebrated in San Francisco in 1988

# data[].attributes.body
Why is the symbol used for pi? Who decided to use that symbol?

# data[].attributes.attachment_link.title
Why do you think it is important to know and understand Pi? In what jobs is it useful?

# data[].attributes.attachment_link.description
It is important to know and understand Pi because it is used in a lot of math and engineering jobs. For example, if you are a designer, you have to designing a particle accelerator for chemistry. The jobs that it is most useful in is designing because circles are an important part in designing a product.

# data[].attributes.attachment_link.description
Why is Pi interesting to understand, compute, and perhaps even to search?

# data[].attributes.body
What are the two ancient countries in which a value of pi was probably first used to calcualte the area of a circle?

# data[].attributes.body
It comes from Ancient Greek texts about geometry.

because perimeter has the lettter p on the first, they thought that they would call it pi as a short form because it does measure the perimeter in a way.

# data[].attributes.body
That really big number that guy said

# data[].attributes.body
pi is a greek alpabet. psi is also the number associated with the golden ratio.

Ha. Psi. Psy.

# data[].attributes.body
Where is pi found in the Bible?

# data[].attributes.body
Archimedes. no. Me. :)

# data[].attributes.body
haha!

# data[].attributes.body
Pi is an incomprehensible number, like God's ways, like the law of the universe you never understand...

Just like Through the Wormhole with Morgan Freeman

# data[].attributes.body
Is there another name for Pi. The golden ratio has another name

# data[].attributes.body
3.141592653589793238462643383279502884197169399375105820974944592307816406286 208998628034825342117067982148086513282306647093844609550582231725359408128481 117450284102701938521105559644622948954930381964428810975665933446128475648233 786783165271201909145648566923460348610454326648213393607260249141273724587006 606315588174881520920962829254091715364367892590360011330530548820466521384146 951941511609433057270365759591953092186117381932611793105118548074462379962749 567351885752724891227938183011949129833673362440656643086021394946395224737190 702179860943702770539217176293176752384674818467669405132000568127145263560827 785771342757789609173637178721468440901224953430146549585371050792279689258923 542019956112129021960864034418159813629774771309960518707211349999998372978049 951059731732816096318595024459455346908302642522308253344685035261931188171010 003137838752886587533208381420617177669147303598253490428755468731159562863882 353787593751957781857780532171226806613001927876611195909216420198938095257201 065485863278865936153381827968230301952035301852968995773622599413891249721775 283479131515574857242454150695950829533116861727855889075098381754637464939319 255060400927701671139009848824012858361603563707660104710181942955596198946767 837449448255379774726847104047534646208046684259069491293313677028989152104752 162056966024058038150193511253382430035587640247496473263914199272604269922796 782354781636009341721641219924586315030286182974555706749838505494588586926995 690927210797509302955321165344987202755960236480665499119881834797753566369807 426542527862551818417574672890977772793800081647060016145249192173217214772350 141441973568548161361157352552133475741849468438523323907394143334547762416862 518983569485562099219222184272550254256887671790494601653466804988627232791786 085784383827967976681454100953883786360950680064225125205117392984896084128488 626945604241965285022210661186306744278622039194945047123713786960956364371917 287467764657573962413890865832645995813390478027590099465764078951269468398352 595709825822620522489407726719478268482601476990902640136394437455305068203496 252451749399651431429809190659250937221696461515709858387410597885959772975498 930161753928468138268683868942774155991855925245953959431049972524680845987273 644695848653836736222626099124608051243884390451244136549762780797715691435997 700129616089441694868555848406353422072225828488648158456028506016842739452267 467678895252138522549954666727823986456596116354886230577456498035593634568174

# data[].attributes.body
How is it like the golden number?

# data[].attributes.body
do some normal people really calculate pi

# data[].attributes.body
what so wonderful about pi

# data[].attributes.body
why does pi never end?

# data[].attributes.body
How many digits do we have?

10,000,000,000,000

# data[].attributes.body
does pi help us in real life?

# data[].attributes.body
Why is pi so important??

# data[].attributes.body
does pi mean anything?

# data[].attributes.body
Why is it spelled pi?

# data[].attributes.body
why do you call it pi?

# data[].attributes.body
Pi

# data[].attributes.body
could we shorten Pi to something like 3.14 and just leave it at 3.14 not keep going for ever and ever and ever?

Is there a number that Pi people stop at because after that, it is just going to far

# data[].attributes.body
When was it first hypothesized?

# data[].attributes.body
Why is pi important for us to learn? Like, do we need to know it in the future...? I don't really see why it's worth learning... :/

# data[].attributes.body
Why do people celebrate pi day?

# data[].attributes.body
What is the world record for knowing the most numbers of pi?

# data[].attributes.body
What questions do you have about pi?