

  1D Line
2D Regular Polygons:

Other Polygons:

Round Forms:
3D Platonic Solids:
Tetrahedron, Cube, Octahedron, Dodecahedron, Icosahedron

Archimedean Solids:

Catalan Solids:

Johnson Solids:

Other Polyhedrons:

Round Forms:
4D Tesseract, Hypersphere


Spherical Ring Calculator

Calculations at a spherical ring. A spherical ring is a sphere with a cylindrical drill hole through its center, like a pearl on a necklace or a napkin ring. Enter at sphere radius and at cylinder radius and height two of the three values and choose the number of decimal places. Then click Calculate.

Euclid Sphere radius (r): Spherical Ring
Spherical Ring
Slice plane: annulus
Cylinder radius (a):
Cylinder height (h):
Surface area (A):
Volume (V):
Surface-to-volume ratio (A/V):
Round to    decimal places.

r² = a² + h²/4
A = 2 * π * h * ( r + a )
V = π * h³ / 6
A/V = 12 * ( r + a ) / h²

π = 3.141592653589793...

Radiuses and height have the same unit (e.g. meter), the area has this unit squared (e.g. square meter), the volume has this unit to the power of three (e.g. cubic meter). A/V has this unit -1.



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