Evaluate
80\sqrt{3}\approx 138.564064606
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2\times 2\sqrt{20}\sqrt{3}\sqrt{20}
Factor 60=20\times 3. Rewrite the square root of the product \sqrt{20\times 3} as the product of square roots \sqrt{20}\sqrt{3}.
2\times 2\times 20\sqrt{3}
Multiply \sqrt{20} and \sqrt{20} to get 20.
4\times 20\sqrt{3}
Multiply 2 and 2 to get 4.
80\sqrt{3}
Multiply 4 and 20 to get 80.
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