Question
A solid hemisphere has radius 5 cm. Calculate its total surface area, leaving your answer in terms of π.
Mark scheme (3 marks):
- M1: curved SA = 2πr² = 2π × 25 = 50π cm²
- M1: flat circular base = πr² = 25π cm²
- A1: Total = 75π cm²
- Common error: stating 50π only (forgetting the flat circular face) — scores 1/3.
3 marks · take your time before peeking.
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Generated by TopMyGrade AI · cross-check official sources before relying on the mark-scheme phrasing.