A circle has center \(P\), and points \(A\) and \(B\) lie on the circ…

Question

Prompt

A circle has center

P

, and points

A

and

B

lie on the circle. The measure of arc

A B

4 5^{\circ}

and the length of arc

A B

4 π

units. What is the length, in units, of the radius of the circle?