railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Mensuration Solid Figures
A metallic solid sphere has radius 42 cm. If it is melted to form small spheres of radius 2.1 cm, then how many small spheres will be obtained?
1
7200
2
8400
3
6000
4
8000