Answer:
68
Step-by-step explanation:
the assumption being, that the angles at vertices C and B are right-angles, namely 90°, which will mean that C and B are points of tangency, since tangent lines and radius segments always meet at right-angles.
well, the tangents lines meet outside at a certain point, here at vertex A, when that happens, both outside tangents are the same length, so AB = 6 = AC.
I would convert them all to the denominator 16, due to the smallest fraction and all of them can be converted to it.
1 = 16/16
1/2 = 8/16
1/4 = 4/16
1/8 = 2/16
1/16 = 1/16
1+ 2 + 4 + 8 + 16 = 31
31/16 = 1 15/16
Hope this helps!