### Home > MC1 > Chapter 9 > Lesson 9.3.1 > Problem 9-124

9-124.

Find the circumference of each of the circles described below.

Radius of

inches Recall the diagram from the Math Notes box from Lesson 9.3.1 below.

Also recall that the same Math Notes box says that the circumference. inches Diameter of

cm Refer to the diagram from part (a) and recall that the circumference =

*π*(diameter).

To get an approximate decimal answer, round*π*so that it equals.