Mathematics for IGCSE & O level - Mensuration (Section 13 - No. 12)
Calculate the total surface area of a solid hemisphere of radius 5cm.
235.6 cm²
200.2 cm²
210.3 cm²
230.1 cm²
คำอธิบาย
Area of base = πr² = 78.5cm²; Curved surface area = 2πr² = 157cm²; Total Surface Area = 157 + 78.5= 235.5cm²