Mensurationhard · Past Paper
The radius of a cylinder is doubled and the height is halved. What is the change in volume?
AVolume is doubled
BVolume is halved
CVolume remains same
DVolume is tripled
✓ Correct Answer: A — Volume is doubled
V' = π(2r)^2 * (h/2) = π(4r^2) * (h/2) = 2πr^2h. It is doubled.
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