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What does Pi mean in math?

Pi is a mathematic constant defined as: "the ratio of the circumference of a circle to its diameter". It usually gets approximated to 3.14159, but scientists have calculated billions of digits. For most of us, pi is that series of digits that we all used in school — though, let's be honest, we never really understood why .

What is the first million digits of Pi ()?

1 Million Digits of Pi The first 10 digits of pi (π) are 3.1415926535. The first million digits of pi (π) are below, got a good memory? Then recite as many digits as you can in 30 seconds for our Pi Day Competition! Why not calculate the circumference of a circle using pi here. Or simply learn about pi here.

Why is Pi irrational?

Pi, in mathematics, the ratio of the circumference of a circle to its diameter. Because pi is irrational (not equal to the ratio of any two whole numbers), its digits do not repeat, and an approximation such as 3.14 or 22/7 is often used for everyday calculations.

How does Pi relate circumference and diameter?

Pi not only relates circumference and diameter. Amazingly, it also connects the diameter or radius of a circle with the area of that circle by the formula: the area is equal to pi times the radius squared. Additionally, pi shows up often unexpectedly in many mathematical situations. For example, the sum of the infinite series

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