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Mathematics for IGCSE & O level - Mensuration (Section 12 - No. 18)

If a solid hemisphere has a radius of 3 cm, what is its total surface area?
28.27 cm²
84.82 cm²
56.55 cm²
113.1 cm²

解释

Total surface area of hemisphere = 3πr² = 3π(3)² = 84.82 cm²

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