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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.

Q: Why is pi special?

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The product of two rational numbers, as in this example, is always RATIONAL.However, if you mean 10 x pi, pi is irrational; the product of a rational and an irrational number is ALWAYS IRRATIONAL, except for the special case in which the rational number is zero.

pi = 3.1415926535897932384626433832795... pi to the tenths = 3.1 pi to the hundredths = 3.14 pi to the thousandths = 3.142 pi to the ten-thousandths = 3.1416 pi to the 10th decimal places = 3.1415926536 etc. ============================

Just divide 56 by pi. Pi is approximate 3.14; or use the "pi" key on your scientific calculator.Just divide 56 by pi. Pi is approximate 3.14; or use the "pi" key on your scientific calculator.Just divide 56 by pi. Pi is approximate 3.14; or use the "pi" key on your scientific calculator.Just divide 56 by pi. Pi is approximate 3.14; or use the "pi" key on your scientific calculator.

d * pi or 2 * r * pi Where d is diameter and r is radius and pi = 3.14159

Pi = 3.14159. The square root of pi = 1.7724531...

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pi is irrational.

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

It is PI day

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

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

-1 it's a special equation

Pi (3.14159265358.....)

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.

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.

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.

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).

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