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SSC Sample Paper Mock Test-18 SSC CGL Tear-II Paper-1

  • question_answer
    If the radius of a circle is increased by 50%, its area is increased by

    A) 125%

    B)  100%

    C)  75%    

    D)  50%

    Correct Answer: A

    Solution :

    If the radius of circle is increased by x%, the area changes by \[\left( 2x+\frac{{{x}^{2}}}{100} \right)%\] \[=\left( 2\times 50+\frac{50\times 50}{100} \right)%=125%\]


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