👉 Spheres are three-dimensional geometric shapes with a round or spherical shape. They can be thought of as the surface of a ball, which is a flat, two-dimensional object. In geometry, spheres are fundamental objects that have many properties and applications in various fields such as physics, engineering, and astronomy. For example, spheres are used to model common physical phenomena like sound waves, light propagation, and gravitational forces. They can also be used to study the structure of celestial bodies like planets, moons,
