The number π is a mathematical constant, the ratio of a circle's circumference to its diameter, commonly approximated as

**3.14159**. It has been represented by the Greek letter "π" since the mid-18th century, though it is also sometimes spelled out as "pi" (/pa?/).1

## Is Pi the same as 22 7?

Proof that

**22**/**7**exceeds**π**Proofs of the famous mathematical result that the rational number**227**is greater than**π**(**pi**) date back to antiquity. If one knows that**π**is approximately 3.14159, then it trivially follows that**π**<**227**, which is approximately 3.142857.2

## Why is Pi Day on March 14th?

**March 14**is

**Pi Day**. It is a

**day**to

**celebrate**the mathematical constant

**pi**(π) and to eat lots of pie.

**Celebrated**in countries that follow the month/

**day**(m/dd) date format, because the digits in the date,

**March 14**or 3/

**14**, are the first three digits of π (3.14),

**Pi Day**was founded by Physicist Larry Shaw in 1988.

3

## What is the one millionth digit of pi?

You can go to the side: http://www.piday.org/million/ to get the first million

**digits**of**pi**. geno3141 Aug 11, 2015. 0. The**millionth digit**of**pi**is 1.4

## What is the formula for pi?

The circumference of a circle is found with the formula C= π*d = 2*π*r. Thus pi equals a circle's circumference divided by its diameter. Plug your

**numbers**into a calculator: the**result**should be roughly 3.14.5

## What is the last digit of pi?

**Pi**is an irrational

**number**. As such, it has no

**final digit**. Furthermore, there is no pattern to its

**digits**. But for what it's worth, here are the first thousand

**digits of pi**.

6

## Who made up pi?

In 1706 a

**little**-known mathematics teacher named**William Jones**first used a symbol to represent the platonic concept of pi, an ideal that in numerical terms can be approached, but never reached.7

## Is the value of pi infinite?

No matter how big your circle, the ratio of circumference to diameter

**is the value of Pi**.**Pi**is an irrational number—you can't write it down as a non-**infinite**decimal. This means you need an approximate**value**for**Pi**. The simplest approximation for**Pi**is just 3.8

## Why is Pi Day in 2015 so special?

It's a most auspicious holiday for math lovers. Saturday, March 14,

**2015**is**Pi Day**, a celebration of the irrational number that describes the ratio of a circle's diameter to its circumference.**Pi**is approximately 3.141592653, but it continues at random to infinity.10

## What is the number of pi?

Regardless of the circle's size, this ratio will always equal pi. In decimal form, the value of pi is approximately

**3.14**. But pi is an irrational number, meaning that its decimal form neither ends (like 1/4 = 0.25) nor becomes repetitive (like 1/6 = 0.166666). (To only 18 decimal places, pi is 3.141592653589793238.)11

## What is the exact fraction of pi?

We all know that 22/7 is a very good approximation to

**pi**. But this well-known**fraction**is is actually 1/791 larger than a slightly less-well-known but much more mysterious rational approximation for**pi**: . The**fraction**355/113 is incredibly close to**pi**, within a third of a millionth of the**exact**value.12

## Why is it called a pi?

It was first

**called**"**pi**" in 1706 by [the Welsh mathematician] William Jones, because**pi**is the first letter in the Greek word perimitros, which means "perimeter."13

## Why is 22 7 A rational number?

Since the

**number**you sent is written as an integer divided by an integer it is a**rational number**and not an irrational**number**. Sometimes the irrational**number**pi is approximated by large frac{**22**}{**7**} but they are not the same**number**.14

## What is the value of pi in degrees?

The point is that

**pi**radians is equal to 180**degrees**. Radians are a unit of measurement for angles, just like**degrees**are, and**pi**is just the number of radians that makes up that angle. Just as one radian is equal to 57.3**degrees**(approximately).15

## Is Pie a rational number?

Example: π (

**Pi**) is a famous irrational**number**. We cannot write down a simple fraction that equals**Pi**. The popular approximation of^{22}/_{7}= 3.1428571428571 is close but not accurate. Another clue is that the decimal goes on forever without repeating.16

## Who discovered Pi value in India?

In ancient times, the Indians approximated pi to be about the square root of 10. The Indian

**mathematician**and**astronomer Aryabhata**in the 5th century gave the approximation of pi = 62832/20000 = 3.1416, which is even more accurate. He did this at the age of 23.17

## What is the first 10 digits of pi?

An e-

**pi**-c day is coming! On 3.14.15 at 9:26:53; the date/time will correspond to the**first 10 digits**of the mathematical constant**pi**(3.141592653). This happens only once per century — a truly once-in-a-lifetime event for most people.18

## How do you type the pi symbol?

**Method 1**

**Typing the Pi Symbol on a Mac**

- Hold the ? Option key. You can find this key on the bottom right of your keyboard, just to the left of the left arrow.
- Press the P key. This should make the π symbol instantly appear.
- Release both buttons.

19

## What state tried to legislate a value for pi?

The fact is, there's only one known case in

**American**history where someone actually tried to get his**state legislature**to redefine the value of pi. It happened in**Indiana**in 1897, and it had nothing to do with biblical values or building children's self-esteem through exactitude.20

## Who discovered the pi?

The Babylonians estimated pi to be about 25/8 (3.125), while the Egyptians estimated it to be about 256/81 (roughly 3.16). The Ancient Greek

**mathematician Archimedes of Syracuse**(287-212 BC) is largely considered to be the first to calculate an accurate estimation of the value of pi.