Evaluate
70\sqrt{665}\approx 1805.131574152
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7\sqrt{66500}
Multiply 190 and 350 to get 66500.
7\times 10\sqrt{665}
Factor 66500=10^{2}\times 665. Rewrite the square root of the product \sqrt{10^{2}\times 665} as the product of square roots \sqrt{10^{2}}\sqrt{665}. Take the square root of 10^{2}.
70\sqrt{665}
Multiply 7 and 10 to get 70.
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