A piece of Pi

3.1415926535

What is Pi?

Pi is the sixteenth letter in the Greek alphabet.

Pi equals to 3.14159265359... That's just a piece of Pi, programs have found 2.7 trillion digits so far.

How is Pi calculated?

Step#1 first find the circumference and diameter. Step#2 you divide the circumference to diameter.
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Pi is a irrational number

It's a real number with nonrepeating decimal that expands

Irrational means not logical or reasonable