Answer:
Arc length is 12436.8m
Step-by-step explanation:
arc length = [tex]\frac{M degree}{360degree}[/tex] * πD
where M is the angle measure of the arc
and D is the diameter
considering the earth as a circle and half the earth as a semi circle the angle measure of the arc will be = 180 degrees
[tex]\frac{180}{360}[/tex] * π * 7917.5 = 12436.8m