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  1. If the side of a square is increased by 30%, its area is increased by ?
    1. 9%
    2. 30%
    3. 60%
    4. 69%
Correct Option: D

Let side of square = 100 cm
Area = (100 x 100)cm2 = 10000 cm2
New area = (130 x 130)cm2 = 16900 cm2
Increase in area = (6900 / 10000) x 100% = 69%


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