Answer:
Area of the square \[=441\,\,{{m}^{2}}\]. \[\therefore \] Length of the side of the square \[=\sqrt{441}\,m\]
Therefore, \[\sqrt{441}=21\]. Hence, the length of the side of the square is 21 m. 21 2 \[\overline{4}\] \[\overline{41}\] ?4 41 41 ? 41 0
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