**Problem : **
If a circle's radius is 4, what is its circumference?

**Problem : **
If a circle's circumference is
24*Π*
, what is its radius?

**Problem : **
A 20 degree arc is what fraction of the circumference?

**Problem : **
What is the length of the major arc pictured below? (C is the center of the
circle)

**Problem : **
A circle has a chord of length ten. What is the minimum circumference of the
circle?