Answer: 10 cm
In a square of side \(a\), the diagonal is \(a\sqrt{2}\).
\(a\sqrt{2} = 10\sqrt{2}\), so \(a = 10\) cm.
Best answer
Answer: 10 cm
In a square of side \(a\), the diagonal is \(a\sqrt{2}\).
\(a\sqrt{2} = 10\sqrt{2}\), so \(a = 10\) cm.
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