b = base. h = height.Depends what shape. A rectangle or square is length x width. A trapezoid is h/2(b1 +b2). A triangle is 1/2bh. A circle is pi x r^2.
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It is the surface area
There are basically two techniques for finding the area of a shape with uneven or irregularly shaped sides. If the sides can be described by algebraic equations, then integral calculus can be used to find the area. Failing that, you can approximate the irregular shape by fitting in a number of smaller, regularly shaped polygons such as squares and triangles, whose area can be calculated by simple geometric techniques.
The shape of Virginia is a triangle. =)
A geometric shape that has 11 sides is called a "hendecagon" or "undecagon." Both terms are acceptable.
A hexahedron is a three-dimensional geometric shape having six sides; a hexagon is a two-dimensional six-sided shape.