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Question

Question 6
Find the length of the side of a square whose area is 441 m2?

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Solution

Let the length of side of a square be x meter.

Area of square =(side)2=x2

According to question,

x2=441x=441=3×3×7×7=3×7 (By prime factorization)x=21m

Hence, the length of side of a square is 21m.


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