Evaluate
4\sqrt{17}\approx 16.492422502
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\sqrt{272}
Add 256 and 16 to get 272.
4\sqrt{17}
Factor 272=4^{2}\times 17. Rewrite the square root of the product \sqrt{4^{2}\times 17} as the product of square roots \sqrt{4^{2}}\sqrt{17}. Take the square root of 4^{2}.
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