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Two circles with radii a and b respectively touch each other externally. Let c be the radius of a circle that touches these two circles as well as a common tangent to these two circles. Then ___.





(D) None of these

Asked by Vishwaraj 12th February 2016, 6:01 PM
Answered by Expert

 C is the correct option. The explanation can be found in the following link:

Answered by Expert 12th February 2016, 6:13 PM
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