because of the simplicity of its definition
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Pi is a number that is never ending, but most people only use the first couple of digits. pi = 3.14159265 pi is the ratio of a circles' diameter to its circumference
there are 10 trillion decimals for pi (or even more) but most people use 3.14 or 3.1415 and personally i use 3.141592654 answer by Jopiesaus
the number is that you use for pi is 3.14 the number is that you use for pi is 3.14
Pi is the number you have to use to solve many circle equations. If you want to find the area of a circle, use radius squared times pi. For the circumference, use diameter times pi.
The answer is 427.04 if we use 3.14 as pi.