Mathematics
If the ratio of volumes of two spheres is 1 : 8, then the ratio of their surface areas is :
1 : 2
1 : 4
1 : 8
1 : 16
Related Questions
A cylindrical vessel 32 cm high and 18 cm as the radius of the base, is filled with sand. This bucket is emptied on the ground and a conical heap of sand is formed. If the height of the conical heap is 24 cm, the radius of its base is :
12 cm
24 cm
36 cm
48 cm
The volume of a sphere is 38808 cu. cm. The curved surface area of the sphere (in cm2) is:
1386
4158
5544
8316
Volume of a cylinder of height 3 cm is 48π cm3. Radius of the cylinder is :
48 cm
16 cm
4 cm
24 cm