Respuesta :

arc length of a circle=Ф/360º(2πr)
Ф=angle of the arc
r=radius

Data:
Ф=140º
r=diameter/2=(100 m)/2=50 m
π=3.14

arc length=(140º/360º)(2)(3.14)(50 m)=122.1111...m=122.1 m

Answer: A)  122.1 m