Arc length=5/2 pi
diameter=6m
Circumference=pi x d=pi x 6m= 6pi
Circumference/arc length=6pi/(5/2pie)=360degree/central angle
6pie x central angle=360degree x 5/2pie
Central angle=360degree x 5/2pie/6pie
Central angle=360degree x 5/12
Central angle=150degree
