Evaluate
3\sqrt{13}\approx 10.816653826
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\sqrt{117}
Add 81 and 36 to get 117.
3\sqrt{13}
Factor 117=3^{2}\times 13. Rewrite the square root of the product \sqrt{3^{2}\times 13} as the product of square roots \sqrt{3^{2}}\sqrt{13}. Take the square root of 3^{2}.
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