Evaluate
6\sqrt{15}\approx 23.237900077
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2\sqrt{3}\sqrt{15}\sqrt{3}
Factor 45=3\times 15. Rewrite the square root of the product \sqrt{3\times 15} as the product of square roots \sqrt{3}\sqrt{15}.
2\times 3\sqrt{15}
Multiply \sqrt{3} and \sqrt{3} to get 3.
6\sqrt{15}
Multiply 2 and 3 to get 6.
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