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The formula for the perimeter of a rectangle The area of a rectangle is the product of the length and width. If a rectangle has length and width , then: [11] it has area =; it has perimeter = + = (+); each diagonal has length = +; and
Arc length – Distance along a curve; Area#Area formulas – Size of a two-dimensional surface; Perimeter#Formulas – Path that surrounds an area; List of second moments of area; List of surface-area-to-volume ratios – Surface area per unit volume; List of surface area formulas – Measure of a two-dimensional surface; List of trigonometric ...
In particular, the perimeter of a rectangle of width and length equals +. An equilateral polygon is a polygon which has all sides of the same length (for example, a rhombus is a 4-sided equilateral polygon). To calculate the perimeter of an equilateral polygon, one must multiply the common length of the sides by the number of sides.
In geometry, a golden rectangle is a rectangle with side lengths in golden ratio +:, or :, with approximately equal to 1.618 or 89/55. Golden rectangles exhibit a special form of self-similarity : if a square is added to the long side, or removed from the short side, the result is a golden rectangle as well.
Each of these triangles has a hypotenuse of length , so the length of ¯ is (+), i.e. simply (+). The quadrilateral's other diagonal is the diameter of length 1, so the product of the diagonals' lengths is also sin ( α + β ) {\displaystyle \sin(\alpha +\beta )} .
That is, the area of the rectangle is the length multiplied by the width. As a special case, as l = w in the case of a square, the area of a square with side length s is given by the formula: [1] [2] A = s 2 (square). The formula for the area of a rectangle follows directly from the basic properties of area, and is sometimes taken as a ...
3.4 Rectangle. 3.5 Thin walled open ... is the angle of twist; T is the applied torque; L is the beam length. The torsion ... Using the formula above: = ...
For the two-dimensional case, this is defined using the distance formula for two points (x 1, y 1) and (x 2, ... is the length of the rectangle's diagonal.