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