Evaluate
30\sqrt{2}\approx 42.426406871
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3\times 10\sqrt{2}
Factor 200=10^{2}\times 2. Rewrite the square root of the product \sqrt{10^{2}\times 2} as the product of square roots \sqrt{10^{2}}\sqrt{2}. Take the square root of 10^{2}.
30\sqrt{2}
Multiply 3 and 10 to get 30.
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