Surface area The area of a shape can be measured by comparison with a square. In the International System of Units (SI), the standard unit area is square meters.
A square with an area of one meter long and three square meters has the same shape as three such squares. In mathematics, the unit square is defined as 1, and the area of any other shape or surface is a dimensionless real number.
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For solid shapes such as spheres, cones or cylinders, the area of the boundary surface is called the surface area. The surface area formula of simple shapes was calculated by the ancient Greeks, but calculating the surface area of more complex shapes usually requires multivariable calculus. ?
Region plays an important role in modern mathematics. Area is not only important in geometry and calculus, but also related to the definition of decisive factors in linear algebra, which is the basic feature of surfaces in differential geometry.
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