Pi
π
Type it
| Unicode | U+03C0 | |
|---|---|---|
| LaTeX | \pi | |
| HTML entity | π | |
| Character | π |
Meaning
The ratio of a circle's circumference to its diameter, approximately 3.14159. It is an irrational number. Compare with Euler's Number and Degree.
How to read it
C = 2πr
is read “C equals two pi r”.