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Banking Quantitative Aptitude Sample Paper Quantitative Aptitude Sample Paper-10

  • question_answer
    The distance between the centres of two equal circles each of radius 3 cm is 10 cm. The length of a transverse common tangent is

    A) 4 cm                            

    B) 6 cm

    C) 8 cm    

    D) 10 cm

    Correct Answer: C

    Solution :

    Length of transverse common tangent
    \[=\sqrt{{{(OO')}^{2}}-{{({{r}_{1}}+{{r}_{2}})}^{2}}}=\sqrt{{{10}^{2}}-{{(3+3)}^{2}}}=8\,cm\]


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