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Calculate
Area  circles, triangles, rectangles and other figures...
Below you can find an online area calculator for some common
shapes. An area is the amount of space covered by a flat surface or
piece of land, described as a measurement. There are several wellknown
formulas for the areas of simple geometric shapes such as circles,
triangles and rectangles.

Using these
formulas, the area of any polygon can be found by dividing
the polygon into simpler figures, for example, triangles. For shapes
with curved edges, calculus is
usually required to determine the area. The problem of finding out the
area of plane figures, simple or complex, was an
important motivation for
the historical development of calculus. 
Examples
Calculate Area of a Circle
The formula is just A = πr^{2
}If your radius is 1 inch, then the
area is 3.1416 square inches.
Calculate Area of a Triangle
The formula is as simple as A = bh/2^{
}If your given base is 3 inches and
your vertical height is 8.2 inches, then the area of that given
triangle is 12.3 square inches.
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