Exam-Style Question on Mensuration
A mathematics exam-style question with a worked solution that can be revealed gradually
Question id: 617. This question is similar to one that appeared on a GCSE Higher paper in 2020. The use of a calculator is allowed.
The diagram show a solid cone painted two different colours.
Find the area of the curved surface of a cone with a base diameter of 35cm and slant height of 40cm that is painted blue, below a circle drawn at a slant height of 15cm above the base.
Give your answer to three significant figures and show your working.
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