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The perimetre of a sa, is 84 cm. its area is
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2
4 s = 84
S= 21
A= s²
= 21×21
= 441
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0
Answer:
Let us consider side of a square as "a".
The perimetre of a square is 84 cm.
4(a) = 84 cm
a = 84/4 cm
a = 21 cm
its area = a²
= (21)²
= 441 cm²
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