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SSC Sample Paper Mock Test-15 SSC CGL Tear-II Paper-1

  • question_answer
    If each side of a square is increased by 10% what is the percentage of increase of the area?

    A) 10

    B)  21

    C)  42

    D)  100

    Correct Answer: B

    Solution :

    Required percentage increase in area \[=\left( 2x+\frac{{{x}^{2}}}{100} \right)%\] \[=\left( 2\times 10+\frac{10\times 10}{100} \right)%=21%\]


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