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Rules of netball. Netball is a ball sport for two teams of seven players; its rules are published in print and online by the International Netball Federation. [1] Games are played on a rectangular court divided into thirds, with a raised goal at each short end. The objective of the game is for teams to score goals, by passing a ball and ...
Under International Basketball Federation (FIBA) rules, [2] the court is slightly smaller, measuring 28 by 15 meters (91.9 by 49.2 ft). In amateur basketball, court sizes vary widely. Many older high school gyms were 84 feet (26 m) or even 74 feet (23 m) in length. The baskets are always 10 feet (3.05 m) above the floor (except possibly in ...
Semicircle. πr 2 / 2 . In mathematics (and more specifically geometry), a semicircle is a one-dimensional locus of points that forms half of a circle. It is a circular arc that measures 180° (equivalently, π radians, or a half-turn). It only has one line of symmetry (reflection symmetry). In non-technical usage, the term "semicircle" is ...
The area of a regular polygon is half its perimeter multiplied by the distance from its center to its sides, and because the sequence tends to a circle, the corresponding formula–that the area is half the circumference times the radius–namely, A = 1 2 × 2πr × r, holds for a circle.
The preferred size for many professional teams' stadiums is 115 by 74 yards (105 by 68 metres). A football pitch (also known as a soccer field in the United States) [1] is the playing surface for the game of association football. Its dimensions and markings are defined by Law 1 of the Laws of the Game, "The Field of Play". [2]
Coloured pitches are used to distinguish the field of play (green) from the run-off (red). The hockey pitch is rectangular in shape. The longer perimeter edges are called the side line, the opposing shorter edges are referred to as the back line and the portion of this between the goal posts is known as the goal line The side line must measure 91.40 m (100 yd) and the back line should measure ...
Semiperimeter. In geometry, the semiperimeter of a polygon is half its perimeter. Although it has such a simple derivation from the perimeter, the semiperimeter appears frequently enough in formulas for triangles and other figures that it is given a separate name. When the semiperimeter occurs as part of a formula, it is typically denoted by ...
Area is the measure of a region 's size on a surface. 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. Area can be understood as the amount of material with a given thickness that would be necessary to ...