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Online calculator. Perimeter of a rectangle

This free online calculator will help you to find the perimeter of a rectangle.

Using this online calculator, you will receive a detailed step-by-step solution to your problem, which will help you understand the algorithm how to find rectangle perimeter.

Calculation of rectangle perimeter

Rectangle
a =
b =

You can input only integer numbers, decimals or fractions in this online calculator (-2.4, 5/7, ...). More in-depth information read at these rules.


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