What cell shape might increase the surface area and decrease the volume?

For the answer to the question above, it is Considered as a cell shaped like a perfect sphere : it has a surface area of 4πr 2, and a volume of (4/3) πr 3. The surface-to-volume ratio of a sphere is 3/r; as the cell gets bigger, its surface-to-volume ratio decreases, making diffusion less efficient.