Evaluate
36\sqrt{5}\approx 80.49844719
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3\times 4\sqrt{3}\sqrt{3}\sqrt{5}
Factor 15=3\times 5. Rewrite the square root of the product \sqrt{3\times 5} as the product of square roots \sqrt{3}\sqrt{5}.
3\times 4\times 3\sqrt{5}
Multiply \sqrt{3} and \sqrt{3} to get 3.
12\times 3\sqrt{5}
Multiply 3 and 4 to get 12.
36\sqrt{5}
Multiply 12 and 3 to get 36.
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