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Sphere properties

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Properties of solids index
Sphere properties diagram
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The volume of a sphere may be solved by integrating a volume of rotation, and is found to be (4/3)πr³. The surface area is given by 4πr².
Radius

Diameter
Surface area
Volume
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notes
Volume increases with the cube of length, and area with its square. Thus, if the radius is doubled, the area is always multiplied by 4 and the volume by 8.