You would have to specify the shape for which we are finding these quantities. But let us say that it is a cube, which is the easiest. The length of an edge of the cube, multiplied by itself gives the area of a face, and multiplied by itself again gives the volume. So the cube root of the volume is the edge length, and then the square of the edge length is the surface area of one face of the cube, which multiplied by 6 gives the area of the entire cube.
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Surface Area: 2πr2 + 2πrh Volume: πr2h
to obtain the ratio of surface area to volume, divide the surface area by the volume.
It has no volume because it's a 2D shape but its surface area is:- length*perpendicular height
To obtain the ratio of surface area to volume, divide the surface area by the volume.
rectangle and octahedron