Mathematics
A solid metallic sphere of radius 8 cm is melted and recast into 64 identical solid spheres. The diameter of each smaller sphere formed is :
4 cm
2 cm
8 cm
1 cm
Related Questions
A hemi-spherical bowl (as shown) has external radius R and internal radius r, the outer surface area of the bowl is :
2πR2 + πr2
3πR2 - πr2
2πR2 + 2πr2
2πR2 - πr2
The ratio between the volumes of two spherical solids is 27 : 8. The ratio between their curved surface areas is :
27 : 8
8 : 27
3 : 2
9 : 4
The volume of a sphere is 38808 cm3; find its diameter and the surface area.