Evaluate
60\sqrt{7}\approx 158.745078664
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2\times 5\sqrt{6}\sqrt{6}\sqrt{7}
Factor 42=6\times 7. Rewrite the square root of the product \sqrt{6\times 7} as the product of square roots \sqrt{6}\sqrt{7}.
2\times 5\times 6\sqrt{7}
Multiply \sqrt{6} and \sqrt{6} to get 6.
10\times 6\sqrt{7}
Multiply 2 and 5 to get 10.
60\sqrt{7}
Multiply 10 and 6 to get 60.
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