Question

Find the circumference of OC. The circumference is cm. (Type an exact answer in terms of π.)

Answer 1

1) Since according to the picture, the Diameter measures 8 cm, we can state that the Radius is 4 cm. Because D= 2R

2) The circumference is the perimeter of a circle.

Plugging into the formula:

`\begin{gathered} C=2\pi R \\ C=2\pi(4) \\ C=8\pi\text{ cm} \end{gathered}`

3) So the circumference measures 8π cm