The Sphere

A sphere is a perfectly round, three-dimensional shape where every point on its surface is equidistant from its center, like a globe or a ball. It has no edges or corners, and its surface curves uniformly. Think of it as the 3D equivalent of a circle. The key measurements of a sphere include its radius (distance from center to surface), diameter (twice the radius), and volume, which can be calculated using specific formulas. Spheres are common in nature and engineering, representing objects like planets, bubbles, and certain sports balls.