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Definition. Common formulas. Ratio of surface areas of a sphere and cylinder of the same radius and height. In chemistry. In biology. See also. References. External links. Surface area. A sphere of radius has surface area πr. The surface area (symbol A) of a solid object is a measure of the total area that the surface of the object occupies. [1] .
Sphere. 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]
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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.
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 .
Pluto (bottom left) compared in size to the Earth and the Moon. Pluto's diameter is 2 376.6 ± 3.2 km and its mass is (1.303 ± 0.003) × 10 22 kg, 17.7% that of the Moon (0.22% that of Earth). Its surface area is 1.774 443 × 10 7 km 2, or just slightly bigger than Russia or Antarctica.
Mar 27, 2022 · Definition: Surface Area. The surface area of a polyhedron is the number of square units that covers all the faces of the polyhedron, without any gaps or overlaps. For example, if the faces of a cube each have an area of 9 cm 2, then the surface area of the cube is 6 ⋅ 9 6 ⋅ 9, or 54 cm 2.
Mercury is the first planet from the Sun and the smallest in the Solar System. In English, it is named after the ancient Roman god Mercurius ( Mercury ), god of commerce and communication, and the messenger of the gods. Mercury is classified as a terrestrial planet, with roughly the same surface gravity as Mars.
