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Pi is a mathematical constant that is the ratio of a circle's circumference to its diameter, approximately equal to 3.14159. Learn how pi is defined, how its symbol π was adopted, and how pi appears in various fields of mathematics and physics.
The Greek small letter π (pi) is used in trigonometry as a constant to represent a half-rotation around a circle in radians. The value of π is approximately 3.14159 and appears in many math formulas and expressions.
- Windows Character Picker. Press ⊞ Win+.. Pressing the Windows key and the period (.) at the same time opens the character picker, which allows you to insert a pi and other symbols into any app that allows typing—even your web browser!
- Windows Alt Codes. Press the Num Lock key on your keyboard. If your keyboard has a 10-digit keypad on the right, you can type the pi symbol quickly using a special alt code.
- Mac. Press and hold the ⌥ Option key on your keyboard. Continue holding down the key. 2 Press the P key, then release both keys. This inserts the pi π symbol into your document, message, or virtually any application on your Mac.
- Android. Open Gboard in any app. If you're using Gboard (the default keyboard on most Android phones and tablets), typing the pi symbol is easy.
Learn how to display a pi symbol (π) using HTML and unicode, or copy and paste from a list of pi symbols. Find out how to type a pi sign on PC and Mac, and see pi symbol examples and images.
Oct 21, 2024 · pi, in mathematics, the ratio of the circumference of a circle to its diameter. The symbol π was devised by British mathematician William Jones in 1706 to represent the ratio and was later popularized by Swiss mathematician Leonhard Euler. Because pi is irrational (not equal to the ratio of any two whole numbers), its digits do not repeat, and ...
- The Editors of Encyclopaedia Britannica
- Pi is the ratio of the circumference of a circle to its diameter.
- The value of pi is approximately 3.14, or 22/7. To 39 decimal places, pi is 3.141592653589793238462643383279502884197. Pi is an irrational number,...
- The symbol for pi is π. It was devised by British mathematician William Jones in 1706 to represent the ratio and was later popularized by the Swiss...
- Pi is used for solving problems involving the lengths of arcs or other curves, the areas of ellipses, sectors, and other curved surfaces, and the v...
Pi (π) is the ratio of the circumference to the diameter of a circle, and it has no pattern in its decimal expansion. Learn how to calculate pi, remember its digits, and explore its properties and applications.
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Find 11 variants of pi symbol (π) and learn how to customize, copy, and paste them. Also, see pi symbol alt codes and HTML code for different fonts and colors.
