Length of ab the minor arc is 40 cm what is the circumference of c?

well, recall that a circle has a total of 360°.

now, that central angle of 60°, has an arc of 40 units.

well, how many 60° are there in 360°? 360/60 = 6.

well, there are 6 of those, and since each has a 40 units arc, there should also be six 40 units arcs for the whole circle, namely its circumference, 6*40.

hey pal. the answer is b plz mark as brainliest