Square in a Circle Calculator — Free Online Tool
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Square in a Circle Calculator

Calculate properties of a square inscribed inside a circle

Formula: For a square inscribed in a circle of radius $r$, the diagonal equals the circle's diameter ($d = 2r$). Side length $s = r\sqrt{2}$, Area $A = 2r^2$, and Perimeter $P = 4r\sqrt{2}$. Enter the circle radius below.
Circle Radius Input

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⚠️ For educational purposes only. Verify results with a qualified professional when making important decisions.

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