Area for circular ring
Find circular ring area and di total length of di inner and outer boundaries.
Your numbers
Area of di ring
Use consistent units. Result follow the assumptions wey you enter.
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Formula
Use A = π(R²−r²) and P = 2π(R+r). R and r na outer and inner radii for di same unit. A na annular area; P include both boundary circles.
Find circular ring area and di total length of di inner and outer boundaries.
Example wey show the calculation
- Radius for outside (m)
- 5
- Radius for inside (m)
- 2
- Area of di ring
- 65.9734457254 m²
- Total length of both boundaries
- 43.9822971503 m
Where e fit work and limits
Use consistent units. Result follow the assumptions wey you enter.
We check inputs for missing values and allowed ranges. Result wey pass the finite numeric range no go show. Rounding affect wetin display, while calculation use the model numeric precision.
Check your units and assumptions before you rely on result. Changing label no convert currency or physical unit.
Version of di formula: c1bcf29f193e · Example don get check: