10th Class Mathematics Circles Question Bank Circles

  • question_answer If the distance between two circles of radii R and r is d, find the length of the direct common tangent.

    A)  \[\sqrt{{{d}^{2}}+{{(R-r)}^{2}}}\]

    B)         \[\sqrt{{{d}^{2}}-{{(R+r)}^{2}}}\]

    C)  \[\sqrt{{{(R+r)}^{2}}+{{d}^{2}}}\]

    D)         \[\sqrt{{{d}^{2}}-{{(R-r)}^{2}}}\]

    Correct Answer: D

    Solution :

    Not Available

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