Difference between revisions of "Perimeter"
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== Formulas == | == Formulas == | ||
− | * Square: <math>4s</math>, where <math>s</math> is the side length. | + | * [[Square (geometry) | Square]]: <math>4s</math>, where <math>s</math> is the side length. |
− | * Rectangle: <math>2(l+w)</math>, where <math>l</math> is the length and <math>w</math> is the width. | + | * [[Rectangle]]: <math>2(l+w)</math>, where <math>l</math> is the length and <math>w</math> is the width. |
* Circle - <math>2\pi r</math>, where <math>r</math> is the [[radius]]. | * Circle - <math>2\pi r</math>, where <math>r</math> is the [[radius]]. |
Revision as of 02:52, 31 October 2006
Definition
The perimeter of a geometric figure is the distance around the edge of the figure. Perimeter is often denoted by P. The perimeter of a circle is called its circumference.
Formulas
- Square:
, where
is the side length.
- Rectangle:
, where
is the length and
is the width.
- Circle -
, where
is the radius.
- Regular geometric figure with
sides:
, where
is the side length.