In a quadrilateral ABCD ,it is given that AB=AD=13,BC=CD=20,BD=24.If r is the radius of the circle inscribable in the quadrilateral ,then what is the integer closest to r?

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Did you appear the PRMO too? I appeared it today. The paper was very tough, though!
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I got 6.5. So the closest integer to it us 7. Therefore 7 is the answer
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This is not fair yaar I wrote 6
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:( :(
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But how?what to do after this?

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Can u tell which topic is this
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can u clarify
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my answer is 2
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sorry my answer is 9
 
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but also be told everything
 
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What are you looking for?