Evaluate
10\sqrt{2}\approx 14.142135624
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\sqrt{10}\sqrt{2}\sqrt{10}
Factor 20=10\times 2. Rewrite the square root of the product \sqrt{10\times 2} as the product of square roots \sqrt{10}\sqrt{2}.
10\sqrt{2}
Multiply \sqrt{10} and \sqrt{10} to get 10.
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