Evaluate
2\sqrt{996503}\approx 1996.49993739
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\sqrt{3986012}
Multiply 1997 and 1996 to get 3986012.
2\sqrt{996503}
Factor 3986012=2^{2}\times 996503. Rewrite the square root of the product \sqrt{2^{2}\times 996503} as the product of square roots \sqrt{2^{2}}\sqrt{996503}. Take the square root of 2^{2}.
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