scale factor
A.9:36
The ratio of their surface areas is the square of the ratio of the lengths. Since the ratio of the lengths is 4-1, then the ratio of the surface areas is 4^2-1^2 or 16-1.
16:49
9:25
Polygons ( means many sides). They are called solids or polyhedrons; they exist in three dimensions and not two.
64 729
64:729
A.9:36
7:10
16:1
7:10
16:25
16:1
5:11
125:216
4:1
9 36