In analysis, the area of a subset of the plane is defined using Lebesgue measure, though not every subset is measurable. In addition to its obvious importance in geometry and calculus, area is related to the definition of determinants in linear algebra, and is a basic property of surfaces in differential geometry. Formulas for the surface areas of simple shapes were computed by the ancient Greeks, but computing the surface area of a more complicated shape usually requires multivariable calculus.Īrea plays an important role in modern mathematics. įor a solid shape such as a sphere, cone, or cylinder, the area of its boundary surface is called the surface area. Indeed, the problem of determining the area of plane figures was a major motivation for the historical development of calculus. For shapes with curved boundary, calculus is usually required to compute the area. Using these formulas, the area of any polygon can be found by dividing the polygon into triangles. There are several well-known formulas for the areas of simple shapes such as triangles, rectangles, and circles. This square and this disk both have the same area (see: squaring the circle). 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. A shape with an area of three square metres would have the same area as three such squares. In the International System of Units (SI), the standard unit of area is the square metre (written as m 2), which is the area of a square whose sides are one metre long. The area of a shape can be measured by comparing the shape to squares of a fixed size. It is the two-dimensional analogue of the length of a curve (a one-dimensional concept) or the volume of a solid (a three-dimensional concept). 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. The area of a plane region or plane area refers to the area of a shape or planar lamina, while surface area refers to the area of an open surface or the boundary of a three-dimensional object. Printf("Perimeter of Rectangle : %0.The combined area of these three shapes is approximately 15.57 squares.Īrea is the quantity that expresses the extent of a region on the plane or on a curved surface. * Perimeter of Rectangle = 2 X(Length + Width) */ * C Program to find perimeter of a rectangle At last, it prints the perimeter of rectangle on screen using printf function. To find the perimeter of rectangle we add the length and width of rectangle and then multiply it with 2(as per formula given above) and store perimeter in a floating point variable. Printf("Area of Rectangle : %0.4f\n", area) Ĭ Program to find the perimeter of the rectangleīelow program, first takes length and width as input from user using scanf function and stores in 'length' and 'width' variables. * C Program to calculate area of a rectangle
![rectangle area formula rectangle area formula](http://ncalculators.com/images/formulas/rectangle.jpg)
![rectangle area formula rectangle area formula](https://calcresource.com/images/centroids-table-primary.rev.9597195dc0.png)
At last, it prints the area of rectangle on screen using printf function. To find the area of rectangle we multiple the length and width of rectangle and store area in a floating point variable. Below program, first takes length and width as input from user using scanf function and stores in 'length' and 'width' variables. To calculate area of a rectangle, we need length and width of a rectangle. W is the length of smaller side of rectangleĬ Program to find the area of the rectangle
![rectangle area formula rectangle area formula](https://d138zd1ktt9iqe.cloudfront.net/media/seo_landing_files/area-of-a-rectangle-area-of-book-1616463754.png)
L is the length of longer side of rectangle As opposite sides of a rectangle are equal we can calculate perimeter of rectangle as follows: To find the perimeter of a rectangle, we should add the length of all four sides of rectangle.