The face of a town hall clock carries a design of concentric circles. The inner circle has radius 0.5 m and the outer circle has radius 1m, which is also the length of the minute hand. The region between the circles is shaded.

Find the area of the shaded region swept out by the minute hand in ten minutes.

(Pi must be left in the answer)

I have tried this question a few times but keep getting the wrong answer. Hel would be appreciated. Thanks