cut out a square of side 7 centimetre and another of side 3 cm.cut the largest suitably and join with the smaller square to make one large square. what is the area of the square
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49cm^2 is the right answer
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perimeter=3×4+7×4=40
now ,
p=40
2×side=40
side=20
area of square =20×20=400cm^2
now ,
p=40
2×side=40
side=20
area of square =20×20=400cm^2
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