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The volume of a cone with base radius r and vertical height h equals:
Answer & Solution
Correct answer: A.
1. A cone is the pyramid-like solid with a circular base.
2. The base area equals π r².
3. As with a pyramid, the cone's volume is one-third of the product of base area and height.
4. So V = (1/3) π r² h.
5. π r² h is the volume of a cylinder with the same base and height, exactly three times the cone.
_Source: SCERT Kerala Std X Mathematics Part-2, Chapter 8-9 (pp 200-219, 2019 ed.)._
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