15.4k views
20 votes
Suppose the radius of a circle is 3 units what is the circumference

User Needpoule
by
4.4k points

1 Answer

1 vote

Answer:


6\pi or approximately
18.85 units

Explanation:

The formula for finding the circumference of a circle is
C=2\pi r, where
C = circumference and
r = radius. In this case,
r=3, so after plugging that into
C=2\pi r, we get:


C=2\pi r\\ = 2*\pi *3\\=6\pi

Since
\pi is approximately
3.1415,
6\pi =6*3.1415=18.849, which rounds to
18.85. Therefore, the circumference of the circle is
6\pi, or approximately
18.85 units. Hope this helps!

User Rohit Jagtap
by
4.7k points