Join the centres and you will have an equilateral triangle with sides 1 m
Also the band will form 3 arcs , each of 120°.
So the band covers the entire distance around the circle, that is, its circumference.
Notice that if you complete the rectangle, we know the long side is 1 m
total distance = 2Ï€(.5) + 3(1)
= (Ï€+ 3) m