The diagram shows a rectangle, WXYZWXYZWXYZ, and a semi-circle. YZ YZ\,YZ is the diameter of the semi-circle. WX=12 cmWX = 12\text{ cm}WX=12 cm and YZ=8 cmYZ = 8\text{ cm}YZ=8 cm.

Calculate the percentage of the area of the rectangle that is shaded. Give your answer correct to 1 decimal place.
Practise Edexcel GCSE Maths Sector Areas and Arc Lengths with exam-style questions for Foundation and Higher tier. 34 questions, matched to the Edexcel GCSE Maths (1MA1) specification and written in Paper 1, Paper 2 and Paper 3 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.