Evaluate
7\sqrt{10}\approx 22.135943621
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\sqrt{490}
To multiply \sqrt{14} and \sqrt{35}, multiply the numbers under the square root.
7\sqrt{10}
Factor 490=7^{2}\times 10. Rewrite the square root of the product \sqrt{7^{2}\times 10} as the product of square roots \sqrt{7^{2}}\sqrt{10}. Take the square root of 7^{2}.
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