Evaluate
2\sqrt{2}\approx 2.828427125
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\frac{16\sqrt{2}}{8}
Factor 512=16^{2}\times 2. Rewrite the square root of the product \sqrt{16^{2}\times 2} as the product of square roots \sqrt{16^{2}}\sqrt{2}. Take the square root of 16^{2}.
2\sqrt{2}
Divide 16\sqrt{2} by 8 to get 2\sqrt{2}.
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