railway RRB Technician Grade 1 Mock Test 2024 Quantitative Aptitude Mensuration Solid Figures

If the height of a cylinder is increased by 25%, and the radius of its base is decreased by 15%, then find the percentage increase/decrease in its curved surface area.

1

increases 3.25%

2

decreases 4.15%

3

decreases 2.23%

4

increases 6.25%

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