1.

The volume of two spheres are in ratio 8 : 64. What is the ratio of the surface areas?

Answer»

Step-by-step explanation:

To find the ratio of the volume of two spheres, we have to find their volumes first. Given that, ratio of the diameter of two spheres is 1:2. So let us ASSUME d1 as 'x' and d2 as '2x'. Now DIVIDE (3) by (4), we get 1/8.

The volume of a SPHERE is V= 4*Pi*R*R*R/3. So for a sphere, the ratio of surface AREA to volume is given by: S/V = 3/R



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