Evaluate
2\sqrt{3905}\approx 124.9799984
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2\sqrt{3905}
Factor 15620=2^{2}\times 3905. Rewrite the square root of the product \sqrt{2^{2}\times 3905} as the product of square roots \sqrt{2^{2}}\sqrt{3905}. Take the square root of 2^{2}.
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