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O-LevelAdditional MathematicsCircular measureOct/Nov 2025Paper 2 Q28 Marks

The diagram shows the shaded region ABCD. The lines AC and BD each have a length of 12 cm. The lines AC and BD bisect each other at the point O. The lines AD and BC are parallel and each have a length of 4 cm. The arcs AB and DC are part of a circle centre O. [Figure 2.1]

Q: What topic does this question test?

This question tests Circular measure in O-Level Additional Mathematics (syllabus code 4037). It is worth 8 marks.

📋 Examiner Report & Trap Analysis

Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...

🎯 Mark Scheme Breakdown

Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.

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About This O-Level Additional Mathematics Question

Topic

This structured question tests Circular measure in O-Level Additional Mathematics (syllabus code 4037). It is worth 8 marks.

Source

This question appeared in the Cambridge O-Level Additional Mathematics Oct/Nov 2025 examination, Paper 2 Variant 2.

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