Question

The diameter of a circle measures 18cm. What is the circumference of the circle?

Use 3.14 for π, and do not round your answer. Be sure to include the correct unit in your answer.

Answer 1

56.52cm

Explanation:

2r = 18cm

r = 9cm

`c = 2r\pi`

C = 2 × 9 × 3.14

C = 56.52cm