Annulus perimeter
Perimeter
Perimeter is the distance around a two-dimensional shape.
Annulus
Ring — is a flat geometric figure bounded by two concentric circles. An open ring is the topological equivalent of a cylinder and a punctured plane.
Annulus perimeter
The perimeter of the ring is equal to the sum of the radii of the large and small circles, multiplied by 2 pi or in the form of diameters P = pi(R+r).
- Area
- Volume
- Perimeter
- Side
- Height
- Diagonal
- Radius
- Median
- Bisector
- Angle
- Theorems