Evaluate
60\sqrt{2}\approx 84.852813742
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3\times 20\sqrt{2}
Factor 800=20^{2}\times 2. Rewrite the square root of the product \sqrt{20^{2}\times 2} as the product of square roots \sqrt{20^{2}}\sqrt{2}. Take the square root of 20^{2}.
60\sqrt{2}
Multiply 3 and 20 to get 60.
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