Evaluate
72\sqrt{10}\approx 227.683991532
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3\times 12\sqrt{2}\sqrt{2}\sqrt{10}
Factor 20=2\times 10. Rewrite the square root of the product \sqrt{2\times 10} as the product of square roots \sqrt{2}\sqrt{10}.
3\times 12\times 2\sqrt{10}
Multiply \sqrt{2} and \sqrt{2} to get 2.
36\times 2\sqrt{10}
Multiply 3 and 12 to get 36.
72\sqrt{10}
Multiply 36 and 2 to get 72.
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