BAC BAC\,BAC is a sector of a circle, centre AAA. AC AC\,AC is the diameter of a semi circle. AC AC\,AC is 10 cm.

Find the area of the shaded region. Give your answer in terms of π\piπ.
Practise OCR GCSE Maths Sector Areas and Arc Lengths with exam-style questions for Foundation and Higher tier. 34 questions, matched to the OCR GCSE Maths (J560) specification and written in the written papers style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.