The circle to the right has a radius of one meter.
How many degrees are in a half circle?
It is half of
What is the length of the arc that covers half of the circle?
Since the circumference of the circle is
, the answer is . So what is the arc length of half of the circle?
Using exact values, what is the length of
? You will have as part of your answer.
What part of the circumference will 60° have?