we know that
[the length of a circumference]=2*pi*r
diameter=6 m
radius r=6/2------> r=3 m
[the length of a circumference]=2*pi*3-------> 6pi m
if 360° (full circle) has a length of--------------> 6pi m
X----------------------------------------------> 2.5pi m
X=2.5pi*360/6pi---------> x=150°
the answer is
150°
