please help with this question its in the picture

Answer:
C. 16.1
Step-by-step explanation:
a circle is 360 degrees so, the arc is 115/360(0.3194) of the whole circle
Circumference of a circle = 2πr = 2(3.1415)(8) = 50.264
multiply to find length of arc: 50.264*0.3194=16.05 which is rounded to 16.1