The Area of Circular Annulus calculator computes the are of an annulus (ring)
INSTRUCTIONS: Choose units and enter the following:
(R) Radius of Outer Circle
(r) Radius of Inner Circle
Area of Circular Annulus (A): The area is returned in square meters. However, these can be automatically converted to compatible units via the pull-down menu.
The Math / Science
(Annulus) This formula provides the area of an annulus given the inner (r) and outer (R) radii.
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This equation, Area of Circular Annulus, references 0 pages
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This equation, Area of Circular Annulus, is used in 4 pages