Difference between revisions of "Perimeter"
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== Definition == | == 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. | + | 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 == | == Formulas == | ||
− | * Square | + | * Square: <math>4s</math>, where <math>s</math> is the side length. |
− | * Rectangle | + | * 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 r is the radius | + | * Circle - <math>2\pi r</math>, where <math>r</math> is the [[radius]]. |
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+ | * [[Regular polygon | Regular]] geometric figure with <math>n</math> sides: <math>ns</math>, where <math>s</math> is the side length. | ||
== Introductory Example Problems == | == Introductory Example Problems == | ||
* [[2006_AMC_10B_Problems/Problem_6 | 2006 AMC 10B Problem 6]] | * [[2006_AMC_10B_Problems/Problem_6 | 2006 AMC 10B Problem 6]] |
Revision as of 02:51, 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.