**Rectangle Calculator**
https://www.calculatorsoup.com/calculators/geometry-plane/rectangle.php

Rectangle Formulas Area of a rectangle: A = ab. Perimeter of a rectangle: P = 2a + 2b. Polygon diagonals of a rectangle: p = q = √(a 2 + b 2) Rectangle Calculations. Calculate A, P, p | Given a, b Given sides lengths a and b calculate area, perimeter and diagonals A = ab; P = 2a + 2b; p = q = √(a 2 + b 2) Calculate P, p, b | Given A, a Operating System: Browser Required With Javascript Support

**Operating System:** Browser Required With Javascript Support

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