Help with a circular/rotational physics homework problem!?

A solid ball with m 25.10204082kg and has a radius of 0.450m rolls 4.7m down a ramp that is inclined 46 degrees with the horizontal. If the ball starts from rest at the top of the ramp, what is the angular speed of the ball at the bottom of the ramp? (The acceleration of gravity is 9.81m/s2). Answer needs to be in units of radians/sec.