Ratio of the perimeter of a circle (circumference) to its diameter
You can define a circle as the locus (set) of all points equidistant from a given point.
The parts of a circle, including the radius, diameter, circumference, and area, are interrelated through mathematical formulas. The radius is half the diameter, and the circumference can be calculated using the formula (C = 2\pi r) or (C = \pi d), where (d) is the diameter. The area of the circle is determined by the formula (A = \pi r^2), linking the radius to the space contained within the circle. Together, these elements define the circle's properties and dimensions.
It's when something mathematical is taking action.
A semi-circle
In Scilab, predefined numerical constants are typically defined using the % character. For example, %pi represents the mathematical constant π (pi), and %e represents Euler's number (e). These constants are built into Scilab and can be used directly in calculations without needing to define them explicitly.
You can define a constant using the define() directive.you can use this a number of ways;to define a variable to a constant do:$string = "hello";define("string",$string);to define a string to a constant use:define("hello","there");to define a integer or other numerical value use:define("number",1.0);Summery:to define a string use quotes as you would do a string.Unlike variables in PHP a constant cannot be changed or undefined once it is defined. Constant remains automatically globally throughout the script. It means that it can be accessed from inside a function. e.g.
Constant means an ongoing situation or thing.
The center of a circle is the point from which all points on the circle are equidistant.
The circumference of a circle is the distance around it.
u define a circle by asking www.dictionary.reference.com
A constant of 5 called MYCONST would be declared as #define MYCONST 5. This is because the statement used is a define statement.
diameter