Mathematics for IGCSE & O level - Mensuration (Section 10 - No. 26)
What is the formula to calculate the curved surface area of a cone?
πr²h
πrl
2πrh
πr²
คำอธิบาย
The curved surface area of a cone is given by the formula πrl, where 'r' is the radius and 'l' is the slant height.