If the radius of a sphere is doubled, by what factor does its volume increase?
A2 times
B4 times
C6 times
D8 times
Explanation
Volume of sphere is proportional to r^3. If radius becomes 2r, volume becomes (2r)^3 = 8 * r^3, which is 8 times.
Exam Relevance
- Topic: Geometry & Mensuration
- Subtopic: Spheres
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