Evaluate
9\sqrt{3}\approx 15.588457268
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3\times 3\sqrt{3}
Factor 27=3^{2}\times 3. Rewrite the square root of the product \sqrt{3^{2}\times 3} as the product of square roots \sqrt{3^{2}}\sqrt{3}. Take the square root of 3^{2}.
9\sqrt{3}
Multiply 3 and 3 to get 9.
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