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Rectangles: Area and Perimeter

A rectangle is a parallelogram with four right angles. All rectangles are also parallelograms, but not all parallelograms are rectangles.

Math diagram

The perimeter P of a rectangle is given by the formula

P = 2 l + 2 w ,

where l is the length and w is the width.

The area A of a rectangle is given by the formula

A = l w .


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