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Topic: Surface area


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  Surface Area Formulas
In general, the surface area is the sum of all the areas of all the shapes that cover the surface of the object.
Surface Area of a Cube = 6 a
In words, the surface area of a cube is the area of the six squares that cover it.
www.math.com /tables/geometry/surfareas.htm   (565 words)

  
 Surface Area Lessons by MATHguide
The definition of surface area is the sum of all unit squares that fit on the exterior of a solid.
All the surfaces of a prism are rectangular.
The third surface, the lateral surface area, is less easy to visualize for the purposes of calculating its area, especially since it does not appear to be in a shape that fits a known area like a triangle or parallelogram.
www.mathguide.com /lessons/SurfaceArea.html   (0 words)

  
 Quantachrome Instruments: Porous Materials Characterization - Surface Area, Pore Size, Density
Specific surface area is often correlated with rates of dissolution and other rate-related phenomena such as catalyst activity, electrostatic properties of powders, light scattering, opacity, sintering properties, glazing, moisture retention, shelf-life and many other properties which can influence the processing and behavior of powders and porous solids.
Since the surface area corresponds to the roughness of the particle exterior and its porous interior, gas sorption is the preferred technique.
So, for accurate surface area measurements,the temperature and pressure of an inert gas are adjusted to cause a single layer of gas molecules to be adsorbed over the entire surface of a solid, be it porous, no-porous or powdered.
www.quantachrome.com /technologies/surface_area.html   (0 words)

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