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.
Constant means an ongoing situation or thing.
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.
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