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In a triangle P Q R , let /P Q R=30o ...

In a triangle `P Q R` , let `/_P Q R=30o` and the sides `P Q` and `Q R` have lengths `10sqrt(3)` and 10, respectively. Then, which of the following statement(s) is (are) TRUE? `/_Q P R=45o` (b) The area of the triangle `P Q R` is `25sqrt(3)` and `/_Q R P=120o` (c) The radius of the incircle of the triangle `P Q R` is `10sqrt(3)-15` (d) The area of the circumcircle of the triangle `P Q R` is `100\ pi`

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