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This is the question i got

A yo-yo has radius 8.00cm and mass 0.180kg with small hoop.

The yo-yo is released at rest and after yo-yo

descended 75.0cm calculater the angular speed of the rotating yo-yo

and the speed of its center.

I tried to use K=1/2Mv^2+1/2IW^2 but i got weird number....

I have the answer but I need t know how to solve it...

Just in case the answer for angular speed is 33.9rad/s and

the speed of its center is 2.71m/s.

I'm seriously fall into the deep~~~~ocean.