Mathematics for IGCSE & O level - Mensuration (Section 11 - No. 20)
What is the formula for the surface area of a solid hemisphere (including the base)?
2πr²
3πr²
4πr²
πr²
คำอธิบาย
The total surface area of a solid hemisphere is the sum of its curved surface area (2πr²) and the area of the circular base (πr²), resulting in 3πr²