Length of the arc of the circle is $\"\"$ .

Where $\"\"$ is radius of the circle and $\"\"$ is central angle measured in radians.

Find $\"\"$ .

Arc length of the circle is $\"\"$ feet and central angle $\"\"$ radians.

Consider $\"\"$ .

Substitute $\"\"$ and $\"\"$ in $\"\"$ .

$\"\"$

Radius of the circle is $\"\"$ feet.