2013 June(71C) Math Question 51

Perimeter, Area, Volume

- Mixed Shapes

51. Circles with centers A, B, and C, respectively, are mutually tangent, as shown below, and have radii of lengths a, b, and c, respectively. The lengths of AB, BC, and AC are 13 inches, 15 inches, and 26 inches, respectively. What is the value of a + b + c ?
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Choice C

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