Evaluate
6\sqrt{11}\approx 19.899748742
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\sqrt{396}
Multiply -44 and -9 to get 396.
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}.
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