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Our site contains more than 100 free online calculators on math, geometry and physics.

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Calculating the perimeter of the rectangle online

Our online calculator calculates the perimeter of the rectangle across the length of its two adjacent sides, a and b. To compute the perimeter of a rectangle, enter the length of its sides, and then click “To calculate”, calculator will show step by step solution and the answer!

Enter the data for the calculation of the perimeter
The formula :
Формула для вычисления периметра прямоугольника
a = b =
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