# Why is π an irrational number when we are often told to treat it as 22/7?

... the normalized area of the circle with diameter 7 is 22/7 · 3.52 ... The final power of π we will ... The value of an irrational number can also never be ... - Read more

The constant π is an irrational number; ... It is often not clear why π is better for such uses than other irrational numbers ... A simple proof that 22/7 exceeds π; - Read more

## Why is π an irrational number when we are often told to treat it as 22/7? resources

### The Evolution of Numbers - Math is Fun - Maths Resources

The Counting Numbers. We ... And we know there are many more irrational numbers. Pi (π ... they are both valid and useful types of Numbers! In fact they are often ...

### Irrational number - Wikipedia, the free encyclopedia

This may account for why we still conceive of x 2 or x 3 as ... the infinite series for several irrational numbers such as π and certain ... often in the form of ...

### Irrational Numbers - Math is Fun - Maths Resources

Irrational Numbers. An Irrational Number is a real number that cannot be written as a simple fraction. Irrational means not Rational. Examples: Rational Numbers

### Pi - Wikipedia, the free encyclopedia

... although fractions such as 22/7 and other rational numbers ... Like all irrational numbers, π ... "for the sake of brevity we will write this number as π; ...

### William Jones: The First Math Teacher to Use Pi | Mental Floss

... fractions like 22/7 or 355/113 often served to fill in ... proof in 1761 that π was an irrational number justified Jones ... of William Jones, ...

### Pi Day · Celebrate Mathematics on March 14th

Pi Day is celebrated on March 14th (3/14) around the world. Pi (Greek letter “ π ”) ... As an irrational and transcendental number, ...

### History of Pi Ppt Presentation - authorSTREAM

Some folks use 22/7 as a quick value for pi as it is within 0.3% of the correct value. ... π is an irrational number, ... and that number is what we call π.

### WikiSlice - World Possible

The constant π is an irrational number; ... and gave two approximations of π, 355 ⁄ 113 and 22 ⁄ 7, ... expansion of π just as often as one would statistically ...

### Why is pi an irrational number? [Archive] - JREF Forum

Why is pi an irrational number? ... close to 22/7, ..., but not exactly any ... However experience teaches me that we often overlook flaws in our own ideas that ...

### Pi Day Fun Facts! – Starts With A Bang - ScienceBlogs ...

... who discovered the fraction 22/7 (which is why Pi Day ... between this number and π. In fact, if we look at the ... the fun facts about ...

### π, Lyoto Machida and other "irrational" things

It is an irrational number ... we commonly see it rendered as the fraction 22/7. But that is an approximation only. π is ... (in my case it was often ...

### pi - Scribd - Read Unlimited Books

... its circumference is pi. List of numbers – Irrational ... e and φ Pi Day Proof that 22/7 exceeds π Software for ... told by the Numbers: Solomon's Pi ...

### the extinction of pi by Miles Mathis - Homepage for Miles ...

They were never happy about the irrational number π , ... we treat the diameter and the circumference as ... I will be told that this is why the Moon’s innate ...

### 7.1.1A Rational Numbers | SciMathMN

7.1.1 Fraction & Decimals: Representations and Relationships. 7.1.1.1 Know that every rational number can be written as the ratio of two integers or as a terminating ...

### Introduction to rational and irrational numbers - Khan Academy

If pi is an irrational number, then why can it be represented in a ratio: ... We call "irrational" those of the numbers which is can not be expressed as a fraction ...

### What Is the History of Pi? (with pictures)

It is an irrational number, ... it can be written as 22/7. ... especially as you extend the number of digits of pi used in formulas.

### Π

Being an irrational number, π cannot be expressed exactly as a ... he proved that 223/71 < π < 22/7 ... "for the sake of brevity we will write this number as π; ...

### pi - Türkçe Bilgi

... it is not immediately obvious why it yields π. ... The constant π is an irrational number; ... that π is between 223 ⁄ 71 and 22 ⁄ 7.

### The Fibonacci Numbers and Golden section in Nature - 2

On the first page on the Fibonacci Numbers and Nature we saw that the Fibonacci numbers ... why Phi appears so often in plants ... called irrational numbers ...

### Innumerate Fundamentalists and π – Good Math, Bad Math

Irrational numbers was not ... than the 22/7 estimate that we were ... of π?”, or offering various reasons why there’s nothing ...

### Pi : Wikis (The Full Wiki) - Students, get citable ...

The Greek letter π, often spelled out pi in ... That Very Irrational number, Pi Pi Posters and ... approximations of π. . For many purposes, 3.14 or 22 / 7 is ...

### Why Pi?

Why Pi? By John Frederic ... Being an irrational number, π cannot be expressed exactly as a common fraction, although fractions such as 22/7 and other rational ...

### Irrational - Who is talking about Irrational on FLICKR

Check who's talking about Irrational right now on FLICKR

### Math: Good for You, Good for Us | The Library Effect

... is our first irrational number we have found. Another famous irrational number is π. ... it cannot be on the list we just made! Why is this?

### Interesting Facts about Pi - Buzzle

Interesting Facts about Pi ... The approximate value of pi is 22/7 and it is written as π=22/7 or as π=3 ... Pi not only an irrational number but also a ...

### What kind of IQ does it take to be a physicist ...

Less than 22/7 Approximations Memorization ... π is an irrational number, ... It is an important number and will come up often if you choose to pursue the study ...

### The ENIAC and Pi | Wittenberg University

... the latter figure being the familiar 22/7 approximation for π. ... Since π was an irrational number it was known that ... while we often cite the phrase ...

### AnswerParty | Where did pi - in math - come from?

... rather than an algebraic irrational number; ... since there are rational numbers arbitrarily close to π. ... where did Pi come from? ...

### Irrational Number Bases (Dozensonline) - InvisionFree

... bases n where n is a rational number. But what are we going to do ... of π the first few are 3, 22/7, ... range of π (or any other irrational number) ...

### pi Facts, information, pictures | Encyclopedia.com ...

What is pi and why does π appear in these formulas? ... an infinite number of other irrational numbers ... The ratio 22/7 is often used as a rougher approximation.

### What is Pi? - LiveScience.com

Pi is an irrational number that never ends; ... Pi (π), the 16th letter of ... some use rational expressions to estimate pi, like 22/7 of 333/106.

### Q: How accurately do we need to know π? Is there a reason ...

... for a while in ancient Egypt they used π ≈ 22/7 ... So how do we know that π is irrational? And why ... if there were a finite number of primes, then π would ...

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