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Rechner auf Deutsch: Regelmäßige geometrische Körper. Home Calculators in English: Regular geometric bodies.
2D: Kreis || Gleichseitiges Dreieck | Quadrat | Fünfeck | Sechseck | Achteck
3D: Kugel || Tetraeder | Würfel | Oktaeder | Dodekaeder | Ikosaeder		 2D: Circle || Equilateral Triangle | Square | Pentagon | Hexagon | Octagon
3D: Sphere || Tetrahedron | Cube | Octahedron | Dodecahedron | Icosahedron
Andere wichtige Körper: Rechteck || Zylinder | Kegel | Quader | Pyramide Other important bodies: Rectangle || Cylinder | Cone | Cuboid | Pyramid



Circle Calculator

Make calculations in a circle. Enter one value and, when needed, change the number of decimal places. Then click Calculate.

Euclid Radius (r): Circle
Diameter (d):
Circumference (c):
Area (A):
Round to    decimal places.








Formulas:
d = 2 r
c = 2 π r
A = π r²

pi:
π = 3.141592653589793...

Radius, diameter and circumference have the same unit (e.g. meter), the area has this unit squared (e.g. square meter).



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