Find radius if a circle is inscribed in quadrilateral

  • Thread starter amitdixit
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  • #1
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  • #2
chiro
Science Advisor
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Hey amitdixit and welcome to the forums.

What have you tried? What have you already thought about?
 
  • #3
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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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