Question 36
Mensuration of SolidsFind the area of the curved surface of a cone whose base radius is 6cm and whose height is 8cm. (Take π = 22/7)
- A.188.57cm2
- B.1320cm2
- C.188cm2
- D.188.08cm2
- E.100cm2
Show the answer and explanation
Answer: A (188.57cm2)
Explanation
The slant height is √(6² + 8²) = 10cm. Curved surface = πrl = 22/7 × 6 × 10 ≈ 188.57cm².