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In a DeltaABC with usual notations given...

In a `DeltaABC` with usual notations given that `a = 4sqrt3, b=4 and c=4`. If DEF is the triangle formed by joining the point of contact of the incirclewith the sides of the triangle ABC respectively, then (as shown in figure)On the basis of above information, answer the following questions :Jaradius of triangle ABC is equal to -

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