Difference between revisions of "Pi"
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== Definition == | == Definition == | ||
| − | '''Pi''' is an [[irrational]] number. It is the ratio of a circle's circumference, or perimeter, to its diameter. The number pi is usually only useful when dealing with [[circle|circles]], [[sphere|spheres]], and discs. | + | '''Pi''' is an [[irrational]] number. It is the ratio of a circle's circumference, or perimeter, to its diameter. It is roughly equal to 3.141592653. The number pi is usually only useful when dealing with [[circle|circles]], [[sphere|spheres]], and discs. |
== See Also == | == See Also == | ||
*[[Circle]] | *[[Circle]] | ||
Revision as of 23:08, 20 June 2006
Definition
Pi is an irrational number. It is the ratio of a circle's circumference, or perimeter, to its diameter. It is roughly equal to 3.141592653. The number pi is usually only useful when dealing with circles, spheres, and discs.
