Evaluate
27\sqrt{10}\approx 85.381496825
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9\sqrt{6}\sqrt{15}
Multiply 3 and 3 to get 9.
9\sqrt{90}
To multiply \sqrt{6} and \sqrt{15}, multiply the numbers under the square root.
9\times 3\sqrt{10}
Factor 90=3^{2}\times 10. Rewrite the square root of the product \sqrt{3^{2}\times 10} as the product of square roots \sqrt{3^{2}}\sqrt{10}. Take the square root of 3^{2}.
27\sqrt{10}
Multiply 9 and 3 to get 27.
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