If you wrap the length of the radius of a circle around the perimeter (circumference) Pi times you come to the point diametrically opposite from where you started (180°) Half of that (Pi/2) is 90° around the the circle.
Pi is the 16th letter of the Greek alphabet
several equations' answers come out to 3.14 and so on, thats pi
yes pi is used around the world today
this sequence appears in pi around 1000 digits into it
Because pi = 0.5*tau
PI the 16th greek letter is the circumference divided by the diameter of a circle. For example 40.5/12.89 = PI.
3.14 is short for pi. Pi can go on forever and ever. It's just a rounded number of pi to make things easier to understand.
Any circle's circumference divided by its diameter has a value of pi
Pi has to do with circumference, because if you divide the circumference of a circle by its diameter, you always get pi (which is around 3.14).
Greek.
3.1415926535897932384626433832795…