The ancient Babylonians used pi as a number approx 4000 years ago.
the number is that you use for pi is 3.14 the number is that you use for pi is 3.14
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
The first person to use pi is the awesome man Archimedes he was the first to compute pi's value accurately! I know this answer and I'm in 5th grade!:)
Any mathematician will use the number pi (and its symbol) sooner or later - it is a number used extensively in many different areas of mathematics.
the first person to use pi was the amazing thomas paul pearson
3.14159265358979323846
The Hindus created PI
The first time the symbol Pi was first used for Pi was in ancient Greece in their numbers. The symbol "π" was number 80 in Greece.
the first 35 digits of pi is... 3.14159265358979323846264338327950288
Because pi is an irrational number that has an infinite amount of digits
pi did not use any professions! It was merely a number.
Pi is an irrational number, and is the circumference of the unit circle. It's a neat number to use in all sorts of circumstances.