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Math Formulas > Geometry > Perimeter of a Rectangle

Perimeter of a Rectangle

w: width
l: length

The perimeter of a rectangle is given by:

P = 2 ∙ (w + l)

Example: Determine the perimeter of a room that is 4 meters in width and 6 meters in length.

P = 2 ∙ (w + l) = 2 ∙ (4 + 6) = 20 m

Online Perimeter Calculator, click on the link will open a new window.

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Perimeter of a Rectangle

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