In geometry, the space occupied by a
three-dimensional (3D) solid object. A
prism such as a
cube,
cuboid, or a
cylinder has a volume equal to the
area of the base multiplied by the height. For a
pyramid or
cone, the volume is equal to one-third of the area of the base multiplied by the perpendicular height. The volume of a
sphere is equal to
4/3 × π
r3, where
r is the radius. Volumes of irregular solids may be calculated by the technique of
integration.
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