If the radius of the circle is 4 cm, find its circumference. [Use 3.14 for π.]

The formula for the circumference of a circle is:
C = 2 × π × r or C = 2πr
You know:
r = 4 So plug it into the formula
C = 2πr
C = 2π(4)
C = 8π or 25.1327412287
[I don't know how you need to write your answer or where it needs to be rounded]