- radius of the outer circle
- radius of the inner circle
3,14
Calculate the Area of an annulus if given radii of the circles ( A ) :
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Written by Administrator
Area of plane shapes
- Area of a triangle
- Area of a right triangle
- Heron's formula for area
- Area of an isosceles triangle
- Area of an equilateral triangle
- Area of a triangle - "side angle side" (SAS) method
- Area of a triangle - "side and two angles" (AAS or ASA) method
- Area of a square
- Area of a rectangle
- Area of a parallelogram
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- Area of a trapezoid
- Area of an isosceles trapezoid
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- Area of a circle
- Area of a sector of a circle
- Area of a circular segment
- Area of an annulus
- Area of a sector of an annulus
- Area of an ellipse
- All formulas for area of plane figures