The ratio of the lengths of corresponding parts in two similar solids is 4: 1. what is the ratio of their surface areas?
a.64: 1
b.16: 1
c.4: 1
d.8: 1

The ratio of the surface areas of the similar solids is equal to the square of the ratio of the corresponding sides. This is shown below.

                    ratio of surface areas = (4:1)^2
                    ratio of surface areas = 16:1

Thus, the answer to this item is equal to B. 

If you make it a little more clear i can answer it