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Sfera eshte trup tre-dimensional me raport minimal sipërfaqe/vëllim, i cili shpjegon se pse kjo formë ka tendencë për të shumë objekte fizike, nga pika e trupave qiellorë. Për shembull, flluskat janë sferike sepse tensioni sipërfaqësor tenton të minimizojë zonën e vëllimit të njëjtë.
A sphere of radius r has surface area 4πr 2. The surface area (symbol A ) of a solid object is a measure of the total area that the surface of the object occupies. [1]
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An ellipsoid is a surface that can be obtained from a sphere by deforming it by means of directional scalings, or more generally, of an affine transformation. An ellipsoid is a quadric surface ; that is, a surface that may be defined as the zero set of a polynomial of degree two in three variables.
Wikipedia Shqip është versioni shqip i Wikipedia-s, enciklopedisë së lirë. Ajo filloi më 12 tetor 2003 dhe tani përmban 84.261 artikuj. Për nga numri i artikujve, Wikipedia shqip e mban vendin e 75-të sipas listës së Wikipedia-ve.
Surface area. The surface area of a sphere of radius r is: =. Archimedes first derived this formula from the fact that the projection to the lateral surface of a circumscribed cylinder is area-preserving.
This is a list of the world's countries and their dependencies by land, water, and total area, ranked by total area. The entries in this list include, but are not limited to, those in the ISO 3166-1 standard, which includes sovereign states and dependent territories .
Faqja kryesore e Wikipedia-s në gjuhen shqipe ka si detyrë të jetë portali i krejt Wikipedia-s shqipe.
