- published: 13 May 2014
- views: 290880
Area is a quantity that expresses the extent of a two-dimensional surface or shape in the plane. Area can be understood as the amount of material with a given thickness that would be necessary to fashion a model of the shape, or the amount of paint necessary to cover the surface with a single coat. It is the two-dimensional analog of the length of a curve (a one-dimensional concept) or the volume of a solid (a three-dimensional concept).
The area of a shape can be measured by comparing the shape to squares of a fixed size. In the International System of Units (SI), the standard unit of area is the square metre (m2), which is the area of a square whose sides are one metre long. A shape with an area of three square metres would have the same area as three such squares. In mathematics, the unit square is defined to have area one, and the area of any other shape or surface is a dimensionless real number.
There are several well-known formulas for the areas of simple shapes such as triangles, rectangles, and circles. Using these formulas, the area of any polygon can be found by dividing the polygon into triangles. For shapes with curved boundary, calculus is usually required to compute the area. Indeed, the problem of determining the area of plane figures was a major motivation for the historical development of calculus.
Data ( /ˈdeɪtə/ DAY-tə, /ˈdætə/ DA-tə, or /ˈdɑːtə/ DAH-tə) are values of qualitative or quantitative variables, belonging to a set of items. Data in computing (or data processing) are often represented by a combination of items organized in rows and multiple variables organized in columns. Data are typically the results of measurements and can be visualised using graphs or images. Data as an abstract concept can be viewed as the lowest level of abstraction from which information and then knowledge are derived. Raw data, i.e., unprocessed data, refers to a collection of numbers, characters and is a relative term; data processing commonly occurs by stages, and the "processed data" from one stage may be considered the "raw data" of the next. Field data refers to raw data collected in an uncontrolled in situ environment. Experimental data refers to data generated within the context of a scientific investigation by observation and recording.
The word data is the plural of datum, neuter past participle of the Latin dare, "to give", hence "something given". In discussions of problems in geometry, mathematics, engineering, and so on, the terms givens and data are used interchangeably. Such usage is the origin of data as a concept in computer science or data processing: data are numbers, words, images, etc., accepted as they stand.
You, were always the kind of girl to call me at 3am,
We were only best of friends.
I, kept this secret kept a lie, deep down locked inside,
But I've got nothing left to hide.
I've got feelings that I can't deny.
Everytime you fall,
I will pick you up baby.
Everytime you fall,
I won't let your heart hit the ground.
I'll always be around.
I'll never ever let you down.
Me, Just put a little faith in me.
I am trying hard to make you see,
That we were always meant to be.
I, I am not just your typical guy.
I'll never let a day go by,
Without you here by my side.
I've got feelings that I can't deny.
Everytime you fall,
I will pick you up baby.
Everytime you fall,
I won't let your heart hit the ground.
I will always be around.
Everytime you fall,
I will pick you up baby.
(down, down, down, baby)
I'll never ever let you down.
Everytime you fall,
I will pick you up baby.
Everytime you fall,
I won't let your heart hit the ground.
I will always be around.
I'll never ever let you down.