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Rectangle area calculation by perimeter

Rectangle area calculation with known perimeter and aspect ratio

Rectangle area calculation by perimeter

Perimeter

It is known that side length one side is longer than the other by one side is shorter than the other by sides are related as

side length

one side is longer than the other by

one side is shorter than the other by

sides are related as

Calculation precision

Digits after the decimal point: 2

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PLANETCALC, Rectangle area calculation by perimeter

• Side length of a triangle

  This calculator computes side length of a triangle given two sides and angle between them (law of cosines)

• Side of regular polygon from polygon area

  Calculates the side length of regular polygon given the area of the regular polygon and number of sides