Calculator and formulas for calculating an annulus
With the annulus calculator on this page, various parameters of an annulus can be calculated. The formulas for the annulus calculation can be found at the bottom of this page.
To perform the calculation, enter the two radii and then click the 'Calculate' button.
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Area | \(\displaystyle A = π · (R^2-r^2)\) | |
Perimeter | \(\displaystyle P = 2 · π · (R+r )\) | |
Breadth | \(\displaystyle b = R-r\) | |
Interval | \(\displaystyle i = 2 · \sqrt{R^2 - r^2}\) |
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