Mathematics for IGCSE & O level - Mensuration (Section 13 - No. 15)
Calculate the surface area of a solid hemisphere with base radius 7.1cm and slant height 9.7cm.
361.9 cm²
363.5 cm²
348.5 cm²
320 cm²
Explicació
Area of base = πr² = 158.4cm²; Curved surface area = 2πr² = 316.8cm²; Total Surface Area = 158.4 + 316.8= 475.2cm²