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9 February, 17:54

In a square of a side length s, what is the length of a diagonal?

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  1. 9 February, 18:06
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    S - length of a square

    d - length of a diagonal

    d = s√2

    why?

    Use the Pythagorean theorem:

    d² = s² + s²

    d² = 2s²

    d = √ (2s²)

    d = √2 · √s²

    d = s√2
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