If the radius of a cylinder is decreased by 20% and the height is increased by 20% to form a new cylinder, then the volume will be decreased by:
A. 23.2%
B. 22.3%
C. 32.2%
D. 20.5%
Answer: Option A
Solution (By Examveda Team)
Radius = 5 : 4Height = 5 : 6
Volume = 52 × 5 : 42 × 6
Decrease % = $$\frac{{29}}{{125}}$$ × 100 = 2.23%
This Question Belongs to Arithmetic Ability >> Percentage
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