Evaluate
45\sqrt{2}\approx 63.639610307
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\sqrt{45}\sqrt{2}\sqrt{45}
Factor 90=45\times 2. Rewrite the square root of the product \sqrt{45\times 2} as the product of square roots \sqrt{45}\sqrt{2}.
45\sqrt{2}
Multiply \sqrt{45} and \sqrt{45} to get 45.
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