railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Mensuration Solid Figures
If the radius and the height of a circular cylinder are 10 cm and 15 cm, respectively, and the radius of a sphere is 5 cm, then what is the ratio of the curved surface area of the cylinder to that of the sphere?
1
3 : 2
2
5 : 1
3
3 : 1
4
1 : 3