Evaluate
12\sqrt{3}\approx 20.784609691
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6\sqrt{12}
Divide 12 by 2 to get 6.
6\times 2\sqrt{3}
Factor 12=2^{2}\times 3. Rewrite the square root of the product \sqrt{2^{2}\times 3} as the product of square roots \sqrt{2^{2}}\sqrt{3}. Take the square root of 2^{2}.
12\sqrt{3}
Multiply 6 and 2 to get 12.
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