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Pi not being infinite (#21118)

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Added note on how pi is irrational but not infinite.
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absentMindedDeveloper
2018-11-05 12:43:02 -08:00
committed by Paul Gamble
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guide/english/mathematics/pi/index.md
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@ -7,6 +7,7 @@ title: PI
PI is a mathematical constant whose value is approximately equal to 3.14159265359. It is defined as the `ratio of circumference of a circle to its diameter`. The PI is represented by a greek letter `𝜋` and is widely used in Physics and Mathematics. PI is a mathematical constant whose value is approximately equal to 3.14159265359. It is defined as the `ratio of circumference of a circle to its diameter`. The PI is represented by a greek letter `𝜋` and is widely used in Physics and Mathematics.
![alt text](https://raw.githubusercontent.com/Qrol/publicImages/master/PiDefinition.png "PI definition")
The ratio 𝜋 = circumference/diameter always remains the same, regardless of the size of a circle. For example, even if we take a new circle of twice the diameter of a previous circle, then the circumference of that new circle will be exactly double of the previous one preserving the value of 𝜋 to be constant. The ratio 𝜋 = circumference/diameter always remains the same, regardless of the size of a circle. For example, even if we take a new circle of twice the diameter of a previous circle, then the circumference of that new circle will be exactly double of the previous one preserving the value of 𝜋 to be constant.
Note: Though Pi irrational, because its decimal repeats infinitely, the number itself is not infinite because it is contained between 3 and 4.