A generalization of it is the set of points which in some vector space is, according to a specified norm, equidistant.
A generalization of it is the set of points which in some vector space is, according to a specified norm, equidistant.
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The surface area of a sphere is equal to four times pi times the square of the radius, and the volume of a sphere is equal to four-thirds times the cube of the radius. Thus: