Class Donut

Description

The Donut class calculates properties of an annulus.

Properties

The following properties can be queried as a result or passed as an argument.

Symbols		Description
Diameter and Radius
	d	Outside diameter
	r	Outside radius
	di	Inside diameter
	ri	Inside radius
	k	Width of the circular ring
Areas
	A	Total area of the outer circle
	Ai	Area of the hole in the circular ring
	Ad	Area of the donut
Perimeter
	P	Outside perimeter
	Pi	Inside perimeter
Donut Segment
	α	Segment angle
	As	Segment area
	Ps	Segment perimeter

Syntax

Object = Donut ("arg names", arguments)

Value = Donut ("get -> arg names", arguments)

Example

The following example specifies an outer radius of 8 and an inner radius of 6.

In the following example, the angle \(α \) is additionally given to calculate a segment of the annulus.

The following example displays the area of the annulus \(Ad \) of the object \(a \).

In the following example, the area of the annulus \(Ad \) is calculated from the outer radius \(r \) and the inner radius \(ri \).