A circle of radius 8 in. is rotating 15^{o}/sec. What is the linear speedv, the angular speed in RPM and the angular speed in rad/sec?

So at first I tried converting the 15^{o}/sec to velocity, by having the degrees become inches. This will then have the measurement in/sec.

But one thing I am confuse is with converting 15^{o}to inches, can anyone help?