Question

A girl ties a toy airplane to the end of a string and swings it around her head. The plane's average angular speed is 2.2 rad/s. In what time interval will the plane move through an angular displacement of 3.3 rad?

Answer 1

Think about this.
(angle moved) = (angular speed)*time

You aren't going to learn any physics having other do even the simplest problems (like this one) for you

Answer 2

1.1923