Mathematics
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
Related Questions
A solid metallic sphere of radius 16 cm is melted to form small identical spheres each of diameter 4 cm. The number of spheres formed is :
64
252
512
1024
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
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