The sphere is perfectly symmetrical, and has the smallest ratio of surface area to volume of any three-dimensional shape. ... The internal and external forces at work within and around these structures force them to assume the shape that has the smallest possible surface area for the volume contained, which is a sphere.

Does sphere have minimum surface area?

The sphere has the smallest surface area of all surfaces that enclose a given volume, and it encloses the largest volume among all closed surfaces with a given surface area.

Which shape is having minimum surface area?

The geometrical shape that has the smallest surface area to volume ratio is a sphere.