SSC Sample Paper SSC CGL - Sample Paper-13

  • question_answer
    The circum-radius of an equilateral triangle is 8 cm. The in-radius of the triangle is

    A) 3.25 cm            

    B) 3.50 cm

    C) 4 cm                

    D) 4.25 cm

    Correct Answer: C

    Solution :

    \[\because \]       \[\frac{OC}{OD\,}=\frac{2}{1}\] \[\Rightarrow \]   \[\frac{8}{OD}=\frac{2}{1}\] \[\Rightarrow \]   \[OD=4\,cm\]             In radius = 4 cm

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