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An area cannot be equal to a length except relative to a particular unit of measurement. For example, if shape has an area of 5 square yards and a perimeter of 5 yards, then it has an area of 45 square feet (4.2 m 2) and a perimeter of 15 feet (since 3 feet = 1 yard and hence 9 square feet = 1 square yard).
The Polsby–Popper test is a mathematical compactness measure of a shape developed to quantify the degree of gerrymandering of political districts. The method was developed by lawyers Daniel D. Polsby and Robert Popper, [1] though it had earlier been introduced in the field of paleontology by E.P. Cox. [2] The method was chosen by Arizona's redistricting commission in 2000.
For example, the perimeter of a rectangle of width 0.001 and length 1000 is slightly above 2000, while the perimeter of a rectangle of width 0.5 and length 2 is 5. Both areas are equal to 1. Proclus (5th century) reported that Greek peasants "fairly" parted fields relying on their perimeters. [ 2 ]
Heron's formula for the area of a triangle is the special case obtained by taking d = 0. The relationship between the general and extended form of Brahmagupta's formula is similar to how the law of cosines extends the Pythagorean theorem .
Heathrow Terminal 5 Terminal 5A exterior Location within Greater London Alternative names Terminal 5, British Airways Terminal 5, T5 General information Status Completed Type Airport terminal Location Junction 14 of the M25 off the A3044 Address Harmondsworth, Hounslow, TW6 2GA Coordinates 51°28′22″N 0°29′15″W / 51.47278°N 0.48756°W / 51.47278; -0.48756 Elevation 22 m ...
The Active Denial System (ADS) is a non-lethal directed-energy weapon developed by the U.S. military, [2] designed for area denial, perimeter security and crowd control. [3] Informally, the weapon is also called the heat ray [4] since it works by heating the surface of targets, such as the skin of targeted human beings.