Can someone please help me​

An aircraft performs a maneuver called an "aileron roll." during this maneuver, the plane turns like a screw as it maintains a straight flight path, which sets the wings in circular motion. if it takes it 35 s to complete the circle and the wingspan of the plane is 11 m, what is the acceleration of the wing tip

Four friends, a, b, c, and d are standing varying distances away from a speaker which is producing sound waves.

Which change would make the diagram correct?