Evaluate
3\sqrt{11111111111111}\approx 9999999.99999995
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3\sqrt{11111111111111}
Factor 99999999999999=3^{2}\times 11111111111111. Rewrite the square root of the product \sqrt{3^{2}\times 11111111111111} as the product of square roots \sqrt{3^{2}}\sqrt{11111111111111}. Take the square root of 3^{2}.
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