Who first used Pi?
Jakob Butterworth did in 2011.
The babylonians first discovered the ratio compared to the diameter and circumference of a circle. Later, Archimedes(287-212BC) discovered and proved his theory of pi. Pi to 27 decimal places: 3.141592653589793238462643383 The square root of pi (to 30 decimal places) is: 1.772453850905516027298167483314
π (pi). If you square pi and take the square root of that, you get pi. If you take the square root of pi and square that, you again get pi. The general answer to "What is the square root of x squared?", where x is any real number, is x itself -- but depending on where you put the implicit parentheses (whether you square first or take the square root first) the intermediate value…