Wasim made a model of Pac-Man, after playing the famous video game of the same name. The area of the model is 120π cm2. Pac-Man's mouth forms an angle of 60° at the centre of the circle.
A picture of the model is shown below.
Wasim wants to decorate the model by attaching a coloured ribbon to the entire boundary of the shape. What is the minimum length of the ribbon required in terms of ? Show your work.