header bg

Question:

The circumference of a circle is 20 cm. What is the approximate radius of the circle?

A 3.2 cm
Explaination

The formula for the circumference of a circle is $2990_w66_h12.png$. Plug in the given circumference and solve for the radius.
$5773_w66_h12.png$
$6393_w70_h12.png$
$8481_w60_h13.png$
Use 3.14 as an approximate value for π and divide to solve. Round to the nearest tenth. r = 3.2