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Find radius if a circle is inscribed in quadrilateral

  1. Aug 25, 2012 #1

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  2. jcsd
  3. Aug 25, 2012 #2


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    Science Advisor

    Hey amitdixit and welcome to the forums.

    What have you tried? What have you already thought about?
  4. Aug 26, 2012 #3


    Staff: Mentor

    you need to show some work before we can help.

    To give you a hint the answer it isnt a) since the diameter would be 22cm but DC is 25cm do you see why?

    Next hint is that br=bq and lines that are tangent to the circle are perpendicular to the radius drawn there so you can construct some intermediate triangles and test the other possible answers.
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