Question

what is sphere?
please help me​

Answer 1

Answer:

a round solid figure, or its surface, with every point on its surface equidistant from its centre.

Answer 2

A sphere is a geometrical object in three-dimensional space that is the surface of a ball. Like a circle in a two-dimensional space, a sphere is defined mathematically as the set of points that are all at the same distance r from a given point, but in a three-dimensional space.