A standard cassette tape is located in a standard cassette player. Each side plays for 45 minutes. The two tape wheels of the cassette have a diameter of 2.3 centimeter when fully wound and fit onto two 1.0 centimeter diameter spindles in the player. Assume that motor drives one spindle at constant angular speed of 1.0 rad/s and the other spindle is free to rotate at any angular speed. Find what is the tapes thickness.
cm