Mathematics
Three solid spherical beads of radii 3 cm, 4 cm and 5 cm are melted and recast into a single spherical bead. Its radius is :
6 cm
7 cm
8 cm
9 cm
Related Questions
Volume of a cylinder of height 3 cm is 48π cm3. Radius of the cylinder is :
48 cm
16 cm
4 cm
24 cm
If a solid sphere of radius 10 cm is moulded into 8 spherical solid balls of equal radius, then the surface area of each ball (in cm2) is :
50 π
60 π
75 π
100 π
The number of solid spheres, each of diameter 6 cm that can be moulded to form a solid metal cylinder of height 45 cm and diameter 4 cm, is :
3
4
5
6