Multiple choice

The ratio between the radius and height of a cone is 3:4. What is the curved surface area of the cone?

  1. $16π m2$
  2. $15π m2$
  3. $12π m2$

  4. Data inadequate

  5. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Curved surface area = πrl, where l = √(r² + h²). Given r:h = 3:4, we can write r = 3k, h = 4k, but without any actual value (radius, height, or slant height), the area cannot be calculated numerically.

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