Answer:
167. I hope this helps!
24a^9 b^11
Step-by-step explanation:
Option C(66.0)
C = 2πr
C=Circumference
π=3.14(pi)
r=radius
C=2x3.14x10.5
3.14x10.5=32.97
32.97x2=65.94
65.94 rounded to nearest tenth is 65.9, so basically 66.0.