Geometry and TrigonometryHardComparing two cylinders
Geometry and Trigonometry practice question
Two cylinders have the same height. The radius of the larger one is twice the radius of the smaller one. The volume of the larger cylinder is how many times the volume of the smaller?
Answer: 4
Volume is proportional to r², so doubling the radius multiplies the volume by 4.
Common wrong answers
- If you answered 2
- 2 assumes volume grows with the radius itself.
- If you answered 6
- 6 adds 2 and 4.
- If you answered 8
- 8 would apply if the height doubled too.
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