archimedes, pi is the name of the greek letter p, which was used as the shortened version of the greek word perimeter,or circumference of a circle. archimedes was looking for a formula to find the area of a circle, and he required a more accurate value for the constant pi. previously pi had been assigned a very approximate value of 1/3 or 22/7.
john wallis
I don't think it was the same person. And there are several formulae to determine pi; which one do you mean?
Srinivasa Ramanujan
budhayana
budhayana
Srinivasa Ramanujan
Ramanujan
Srinivasa Ramanujan.
V = radius2 x Pi x length
The value of pi is the circumference of a circle divided by its diameter
The perimeter of a circle is called the circumference. Its formula is C = pi x diameter. The value of pi is often rounded to 3.14 for problem solving purposes. So just plug in the values for pi and the diameter into the formula to get the circumference of the circle: 3.14 x 600mm = approximately 1884 mm.
Evopi = evw/pi – evw/o pi