Mathematics for IGCSE & O level - Mensuration (Section 7 - No. 17)

A cone has base radius 5 cm and a perpendicular height of 12 cm. Calculate for curved surface area.

154.5 cm²

204.2 cm²

188.5 cm²

254.4 cm²

Slant height (s) = √(r² + h²) = √(5² + 12²) = 13 cm. Curved Surface Area = πrs = π * 5 * 13 ≈ 204.2 cm²