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en.wikipedia.org/wiki/Area

Area is the quantity that expresses the extent of a two-dimensional figure or shape, or planar ... Formulas for the surface areas of simple shapes were computed by the ancient Greeks, but computing the .... the formula over two centuries earlier, and since Metrica is a collection of the mathematical knowledge available in the ...

www.math.com/tables/geometry/areas.htm

(pi = pi = 3.141592...) Area Formulas. Note: "ab" means "a" multiplied by "b". "a2" means "a squared", which is the same as "a" times "a". Be careful!! Units count.

www.mathsisfun.com/area.html

Example: What is the area of this rectangle? Area Count. The formula is: Area = w × h w = width h = height. We know w = 5 and h = 3, so: Area = 5 × 3 = 15 ...

www.science.co.il/formula

Area and Volume Formula for geometrical figures - square, rectangle, triangle, ... Source: Spiegel, Murray R. Mathematical Handbook of Formulas and Tables.

math2.org/math/geometry/areasvols.htm

Math2.org Math Tables: Areas, Volumes, Surface Areas. (Math). (pi = [pi] = 3.141592...) Areas. square = a2. rectangle = ab. parallelogram = bh. trapezoid = h/2 (b1 + b2). circle = pi r 2 ... [s(s-a)(s-b)(s-c)] when s = (a+b+c)/2 (Heron's formula).

www.coolmath.com/reference/areas

Formulas and instructions for finding the areas of circles, kites, parallelograms, rectangles, rhombi, squares, trapezoids and oddly shaped geometric objectsJust  ...

www.freemathhelp.com/area-formulas.html

Free geometry lesson with formulas and diagrams to calculate the area of common polygon shapes.

www.varsitytutors.com/hotmath/hotmath_help/topics/perimeter-area-volume

Math Homework. ... Some formulas for common 2 -dimensional plane figures and 3 -dimensional solids are given below. The answers have one, two, or three dimensions; perimeter is measured in linear units , area is measured in square units ...

thinkmath.edc.org/resource/area-formulas

Students who have the informal notion that area is the "amount of 2-D 'stuff'" contained inside a region can invent for themselves most of the formulas that they  ...

www.mathgoodies.com/lessons/vol1/area_rectangle.html

The formula is: [IMAGE]. A = L x W , where A is the area, L is the length, W is the width, and · means multiply. A square is a rectangle with 4 equal sides. To find ...