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# Why is pi special?

Updated: 4/28/2022

Wiki User

14y ago

Because it's irrational. It goes on forever, the reason for this is that Pi is used to work out the circumference of a circle.

Circles don't have sides, so you can't times one by another to get the Area.

You have to use a number that goes on forever, because technically, a circle goes on forever.

Mathematicians wanted a number to work out circles. And after much calculation, they finally discovered an irrational number, Pi.

3.142. It cannot be turned into a fraction.

Wiki User

14y ago

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Related questions

### Why is pi 3.14 a special number?

pi is irrational.

### What is the final digit in Pi?

Pi never ends. That's why it's so special.

It is PI day

### Why is pi day 2015 so special?

The date can be written as 3.14.15 which are the first digits of pi. That can only happen once every hundred years.

### What is the circumference of a circle with a diameter of 1 inch?

You need the formula circumference = pi x diameter pi = 3.14.. This is by the way the definition of the special number pi.

### What is the natural log of i times pi?

-1 it's a special equation

### The special number that relates the diameter of a circle to its circumference is?

Pi (3.14159265358.....)

### Is the square of pi a rational?

No. Pi is a special kind of irrational number called a transcendental number. This means that no power of pi (other than 0), or any combinations of its powers is rational.

### What is special about pi and what you have to use it for?

Pi is an irrational number, and is the circumference of the unit circle. It's a neat number to use in all sorts of circumstances.

### If a circle has the diameter of 3 what is the cirumference?

The circumference is equal to the diameters times pi. Pi is approximately 3.14, so just multiply 3 x 3.14. If you have a scientific calculator, it will probably include a special key to give you a better approximation for pi.The circumference is equal to the diameters times pi. Pi is approximately 3.14, so just multiply 3 x 3.14. If you have a scientific calculator, it will probably include a special key to give you a better approximation for pi.The circumference is equal to the diameters times pi. Pi is approximately 3.14, so just multiply 3 x 3.14. If you have a scientific calculator, it will probably include a special key to give you a better approximation for pi.The circumference is equal to the diameters times pi. Pi is approximately 3.14, so just multiply 3 x 3.14. If you have a scientific calculator, it will probably include a special key to give you a better approximation for pi.

### Does 5 times pi end?

No.You can do just about anything to pi, and the answer will still be a transcendental number (a special kind of irrational number than can't be the solution of an algebraic equation).The only thing I can think of is pi/pi =1 (or multiples of this).

### What is special about the number pi?

It's the ratio between the circumference of any circle to its diameter.