Question

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

Answer 1

the formula for the circumference is 2πr so... 25.12 cm

Answer 2

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]