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DeltaABC the lengths of sides AC and AB...

`DeltaABC` the lengths of sides AC and AB are 12 cm and 5 cm, respectively. If the area of `DeltaABC` is 30 cm2 and R and r are respectively the radii of circumcircle and incircle of `DeltaABC` then the value of 2R+r (in cm) is equal to......

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