Evaluate
12\sqrt{11}\approx 39.799497484
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2\times 6\sqrt{11}
Factor 396=6^{2}\times 11. Rewrite the square root of the product \sqrt{6^{2}\times 11} as the product of square roots \sqrt{6^{2}}\sqrt{11}. Take the square root of 6^{2}.
12\sqrt{11}
Multiply 2 and 6 to get 12.
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