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If you have a circle ... any circle ... and you measure its circumference, measure its diameter,
and divide the circumference by the diameter, the answer is always the same number, which
people have decided to label with the name "pi".
"Pi" is the ratio of a circle's circumference to its diameter, but "pi" is not a rational number,
since it's not the ratio of any two integers.
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Why is pi a constant?
Pi is a constant because it is the ratio of the circumference to the diameter of a circle and they are always in the exact same proportion.
Where did pi start?
The observation that the ratio of circumference and radius is constant.
Are pi's digits peridic?
The digits of pi are not periodic. Pi is an irrational constant, and if its digits were periodic, it could be expressed as a ratio of constant integers, meaning it would be rational.
What number comes before pi?
The number that comes before pi is 3.14159265358979323846... which is the mathematical constant representing the ratio of a circle's circumference to its diameter. Pi is an irrational number, meaning it cannot be expressed as a simple fraction, and it is approximately equal to 3.14159. Therefore, the number before pi is 3.
Is the ratio of the circumference to the diameter is constant for any circles?
Yes, pi.
