Perimeter

Revision as of 01:52, 31 October 2006 by I_like_pie (talk | contribs) (Formulas)

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: $4s$, where $s$ is the side length.
  • Rectangle: $2(l+w)$, where $l$ is the length and $w$ is the width.
  • Circle - $2\pi r$, where $r$ is the radius.
  • Regular geometric figure with $n$ sides: $ns$, where $s$ is the side length.

Introductory Example Problems