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SSC Sample Paper SSC CHSL (10+2) Sample Test Paper-12

  • question_answer
    The distance between the centres of two circles having radii \[4.5\text{ }cm\] and \[3.5\text{ }cm\] respectively is 10 cm. What is the length of the transverse common tangent of these circles?

    A)  8cm               

    B)  7cm

    C)  6cm   

    D)  None of the above

    Correct Answer: C

    Solution :

     Length of transverse common tangent \[=\sqrt{{{d}^{2}}-{{({{r}_{1}}+{{r}_{2}})}^{2}}}\] \[\Rightarrow \,\,\sqrt{100-{{(4.5+3.5)}^{2}}}\] \[=\,\,\sqrt{36}\,=\,\]             


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