In \( \triangle A B C \), the lengths of sides \( A C \) and \( A B...

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In \( \triangle A B C \), the lengths of sides \( A C \) and \( A B \) are \( 12 \mathrm{~cm} \) and \( 5 \mathrm{~cm} \), respectively. If the area of \( \triangle A B C \) is \( 30 \mathrm{~cm}^{2} \) and \( R \) and
\( \mathrm{P} \) \( r \) are respectively the radii of circumcircle and incircle of

W) \( \triangle A B C \), then the value of \( 2 R+r( \) in \( \mathrm{cm}) \) is equal to
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