問題詳情

63. Circle O is the inscribed circle of △ ABC, intersecting the line segments AB , BC , ACat three points of P, Q and R, respectively.Given AB = 5 , BC = 6 , AC = 7 , which of the following is correct?
(A) AP = 2
(B) BQ = 3
(C) The radius of circle O is 2 63 .
(D) The area of △ ABC is 83.

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