### Home > PC3 > Chapter 1 > Lesson 1.2.3 > Problem 1-102

1-102.

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?

The circumference of the circle is

. What is half of the circumference? Using exact values, what is the length of

? You will have as part of your answer.What part of the circumference will

have? What is

of the circumference?