A and B are two cones. The curved surface area of A is twice that of B. The slant height of B is twice that of A. What is the ratio of radii of A to B?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 4:1
Let the slant height of cone A be 1 , then slant height of cone B becomes 2
| Calculation | Formula used |
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According to question, (π × r1 × 1)/(π × r2 × 2) = 2/1 r1/r2 = 4/1 |
Curved Surface area of cone = πrl |