- A16 : 25
- B5 : 4
- C4 : 5
- D2 : 3
Step-by-Step Solution
CSA = πrl. With r the same, CSA is proportional to l, so the ratio is 4 : 5. (16 : 25 would need both r and l in that ratio.)
Answer: C) 4 : 5
Two cones have the same base radius, and their slant heights are in the ratio 4 : 5. What is the ratio of their curved surface areas?
Class 9Surface Area of a ConeMensuration
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