Answer:
C
Step-by-step explanation:
The length of arc AC (L) is calculated as
L = circumference of circle × fraction of circle
= 2πr × [tex]\frac{150}{360}[/tex]
= 2π × 12 × [tex]\frac{5}{12}[/tex]
= 2π × 5
= 10π ≈ 31.42 → C
