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| Math Central | Quandaries & Queries |
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Question from tara, a parent: am trying to help my brother's daughter in maths, tomorrow she has maths exam |
Hi Tara,
Since the picture is a square its length and width are equal.
Thus the area is
length × width= length × length = length2 = 441 square cm.
Thus length = √441 = 21 cm.
Penny
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