Syntax
area(Circle) or area(Polygon) or area(Expr, x=value1..value2)
Description
Returns the area of a circle or polygon. Can also return the area under a curve between two points.
Example
If GA is defined to be the unit circle, then area(GA) returns π.
area(4-x^2/4, x=-4..4) returns 64/3 or 21.333…
area — Discussion