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A sphere (from Greek σφαῖρα, sphaîra) [1] is a geometrical object that is a three-dimensional analogue to a two-dimensional circle.Formally, a sphere is the set of points that are all at the same distance r from a given point in three-dimensional space. [2]
The ratio of the volume of a sphere to the volume of its circumscribed cylinder is 2:3, as was determined by Archimedes. The principal formulae derived in On the Sphere and Cylinder are those mentioned above: the surface area of the sphere, the volume of the contained ball, and surface area and volume of the cylinder.
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In coordinates, a 3-sphere with center (C 0, C 1, C 2, C 3) and radius r is the set of all points (x 0, x 1, x 2, x 3) in real, 4-dimensional space (R 4) such that = = + + + =. ...
Sphere packing finds practical application in the stacking of cannonballs.. In geometry, a sphere packing is an arrangement of non-overlapping spheres within a containing space.
Hamas announced on Friday that among the three Israeli hostages to be released from Gaza on Saturday are an American dual national and the father of the youngest hostages taken from Israel on ...
On Thursday, veteran NBA point guard Dennis Schröder was traded yet again, reportedly landing with the Detroit Pistons after being rerouted several times.
Starbucks faces a new lawsuit filed by Missouri's attorney general alleging the restaurant chain relies on "race-and-sex-based hiring practices" that violate federal and state laws.