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In AABC, angle A, B and C are in the rat...

In AABC, angle A, B and C are in the ratio 1:2:3, then which of the following is (are) correct? (All symbol used have usual meaning in a triangle.) (A) Circumradius of AABC = c (B) `a : b : c = 1 :sqrt3:2` (C) Perimeter of `triangle ABC` = `3 +sqrt3` (D) Area of triangle ABC=`sqrt(3)/8 c^2`

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