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To work out the area of a square or rectangle, multiply its height by its width. If the height and width are in cm, the area is shown in cm². If the height and width are in m, the area...
- What is the perimeter? - BBC Bitesize
The perimeter of this shape is 10 + 10 + 6 + 6 = 32 The...
- Area - BBC Bitesize
Area is the amount of space taken up by a 2D shape. 2D...
- What is the perimeter? - BBC Bitesize
Area is the amount of space taken up by a 2D shape. 2D shapes are completely flat. To work out the area of a square or a rectangle, multiply its height by its width.
- Rectangle
- Triangle
- Trapezoid
- Circle
- Sector
- Ellipse
- Parallelogram
A rectangle is a quadrilateral with four right angles. It is one of the simplest shapes, and calculating its area only requires that its length and width are known (or can be measured). A quadrilateral by definition is a polygon that has four edges and vertices. In the case of a rectangle, the length typically refers to the longer two edges of the ...
There are many equations for calculating the area of a triangle based on what information is available. As mentioned in the calculator above, please use the Triangle Calculatorfor further details and equations for calculating the area of a triangle, as well as determining the sides of a triangle using whatever information is available. Briefly, the...
A trapezoid is a simple convex quadrilateral that has at least one pair of parallel sides. The property of being convex means that a trapezoid's angle does not exceed 180° (in contrast, a concave quadrilateral would), while being simple reflects that trapezoids are not self-intersecting, meaning two non-adjacent sides do not cross. In a trapezoid, ...
A circle is a simple closed shape formed by the set of all points in a plane that are a given distance from a given center point. This distance from the center to any point on the circle is called the radius. More detail can be found regarding circles on the Circle Calculator page, but to calculate the area, it is only necessary to know the radius,...
A sector of a circle is essentially a proportion of the circle that is enclosed by two radii and an arc. Given a radius and an angle, the area of a sector can be calculated by multiplying the area of the entire circle by a ratio of the known angle to 360° or 2π radians, as shown in the following equation: or The Farmer and his Daughter – Sectioning...
An ellipse is the generalized form of a circle, and is a curve in a plane where the sum of the distances from any point on the curve to each of its two focal points is constant, as shown in the figure below, where P is any point on the ellipse, and F1 and F2are the two foci. When F1 = F2, the resulting ellipse is a circle. The semi-major axis of an...
A parallelogram is a simple quadrilateral which has two pairs of parallel sides, where the opposite sides and angles of the quadrilateral have equal lengths and angles. Rectangles, rhombuses, and squares are all special cases of parallelograms. Remember that the classification of a "simple" shape means that the shape is not self-intersecting. A par...
What is area? Area means how much space a flat shape takes up. Area is measured in square units: Square centimetres (cm²) are good for measuring a small area - like the picture or a...
Area is the size of a surface! Learn more about Area, or try the Area Calculator. Triangle. Area = ½ × b × h. b = base. h = vertical height. Square. Area = a2. a = length of side.
Area is defined as the total space taken up by a flat (2-D) surface or shape of an object. The space enclosed by the boundary of a plane figure is called its area. The area of a figure is the number of unit squares that cover the surface of a closed figure. Area is measured in square units like cm² and m².
Calculators. Geometry. Area Calculator. Use this area calculator to easily calculate the area of common bodies like a square, rectangle, triangle, circle, parallelogram, trapezoid, ellipse, regular octagon, and sector of a circle. Formulas and explanations on finding the area of any shape are below. [x] hide illustration. Calculate Area.
