The set of points in space equidistant from a certain point.

The surface area and volume of a sphere of radius, r

Sphere of radius r
Surface area, A

Volume, V

Moments of inertia of a solid sphere of radius, r and mass, m

Drag Coefficient
Cd = 0.45
Re < 2e5
A = πd2/4

Cd = 0.2
Re > 2e5
A = πd2/4

See also: Ball, Circle, Density, Great Circle, Hemisphere, Loxodrome, Lune, Mass, Small Circle, Spherical Triangles, Spherical Trigonometry.

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Subjects: Geometry