Evaluate
9\sqrt{11}\approx 29.849623113
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\sqrt{900-9}
Multiply 25 and 36 to get 900.
\sqrt{891}
Subtract 9 from 900 to get 891.
9\sqrt{11}
Factor 891=9^{2}\times 11. Rewrite the square root of the product \sqrt{9^{2}\times 11} as the product of square roots \sqrt{9^{2}}\sqrt{11}. Take the square root of 9^{2}.
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