pi (math)
A number represented by the ๐ symbol. It is the ratio of a circle's circumference to its diameter, roughly equal to 3.14159 (this number is infinite and non-repeating, or an irrational number). This means that a circle's circumference (the entire circle itself) is a little more than three times as long as its diameter (a straight line running through the circle).
Pi and pi approximations
- Pi: 3.14159265358979323846
- 22/7: 3.14285714285714285714