1. Problem: Find the square root of 3721.
2. Formula: To find the square root of a number $N$, find a number $x$ such that $x^2 = N$.
3. Calculation: Check perfect squares near 3721.
4. $61^2 = 3721$.
5. Therefore, $\sqrt{3721} = 61$.
Final answer: 61.
Sqrt 3721 99F621
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