Exam-Style Question on Mensuration
A mathematics exam-style question with a worked solution that can be revealed gradually
Question id: 301. This question is similar to one that appeared on a GCSE Higher paper in 2017. The use of a calculator is allowed.
A yellow equilateral triangle has been painted on a purple sector. The side OC is 20cm and OA is 12cm. Calculate the area of the purple region ABCD as a percentage of the area of the whole sector OCD.
The diagram is not drawn to scale.
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