CalculatorMath
Annulus Area Calculator
Find the area of a circular ring. Outer radius 5 and inner radius 3 give area 16π. The inner radius must be nonnegative and smaller than the outer radius.
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Change any input above and the result updates instantly. The formula or method used by this tool is shown below.
Area = π(R²−r²).
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What does the Annulus Area Calculator do?+
Find the area of a circular ring. Outer radius 5 and inner radius 3 give area 16π. The inner radius must be nonnegative and smaller than the outer radius.
How does this calculator calculate the result?+
It uses this method: Area = π(R²−r²).
Are my inputs saved or sent to an account?+
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