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Home | Forms | Contact & Privacy Geometric Calculators German: Geometrierechner

2D Regular Polygons:
Equilateral Triangle, Square, Pentagon, Hexagon, Heptagon, Octagon, Nonagon, Decagon, Hendecagon, Dodecagon, Hexadecagon, N-gon

Other Polygons:
Triangle, Right Triangle, Isosceles Triangle, IR Triangle, Quadrilateral, Rectangle, Rhombus, Parallelogram, Kite, Right Trapezoid, Isosceles Trapezoid, Trapezoid, Cyclic Quadrilateral, Tangential Quadrilateral, Arrowhead, Antiparallelogram, House-Shape, Concave Pentagon, Parallelogon, Threestar, Fourstar, Pentagram, Hexagram, Oktagram, Star of Lakshmi, Polygon

Round Forms:
Circle, Semicircle, Circular Sector, Circular Segment, Circular Layer, Round Corner, Annulus, Annulus Sector, Ellipse, Elliptical Segment, Stadium, Digon, Spherical Triangle, Spiral, Reuleaux Triangle, Cycloid, Astroid, Hypocycloid, Cardioid, Epicycloid, Parabolic Segment, Arbelos, Salinon, Lune, Oval, Three Circles, Lemniscate, Squircle
3D Platonic Solids:
Tetrahedron, Cube, Octahedron, Dodecahedron, Icosahedron

Archimedean Solids:
Truncated Tetrahedron, Cuboctahedron, Truncated Cube, Truncated Octahedron, Rhombicuboctahedron, Icosidodecahedron, Truncated Dodecahedron, Truncated Icosahedron

Catalan Solids:
Triakis Tetrahedron, Rhombic Dodecahedron, Tetrakis Hexahedron, Deltoidal Icositetrahedron, Rhombic Triacontahedron

Johnson Solids:
Pyramids, Cupolae, Rotunda, Elongated Pyramids, Snub Disphenoid

Other Polyhedrons:
Cuboid, Square Pillar, Square Pyramid, Regular Pyramid, Pyramid, Regular Frustum, Frustum, Bipyramid, Ramp, Right Wedge, Wedge, Rhombohedron, Parallelepiped, Prism, Oblique Prism, Antiprism, Trapezohedron, Disphenoid, Corner, General Tetrahedron, Half Cuboid, Skewed Cuboid, Truncated Rhombohedron, Stellated Octahedron, Small Stellated Dodecahedron, Great Stellated Dodecahedron

Round Forms:
Sphere, Hemisphere, Cylinder, Cut Cylinder, Oblique Cylinder, Generalized Cylinder, Cone, Truncated Cone, Oblique Circular Cone, Elliptic Cone, Spheroid, Ellipsoid, Spherical Sector, Spherical Cap, Spherical Segment, Spherical Wedge, Cylindrical Wedge, Cylindrical Sector, Cylindrical Segment, Flat End Cylinder, Spherical Shell, Cylindrical Shell, Spherical Ring, Torus, Arch, Reuleaux-Tetrahedron, Capsule, Lens, Barrel, Egg Shape, Paraboloid, Hyperboloid, Oloid, Steinmetz Solids


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Oblique Circular Cone Calculator

Calculations in an oblique circular cone. This is a cone, where the apex isn't perpendicular above the base center. The deviation d is the horizontal distance of apex and base center. Enter the base radius and two of the three values h, d and l. Choose the number of decimal places and click Calculate. Angles are calculated and displayed in degrees, here you can convert angle units. The lateral surface is calculated with an integral and can only be estimated here. The estimation is the better, the larger d is compared to r and h, so the more oblique the cone is.


Euclid Base radius (r): Oblique Circular Cone
Base: Circle
Height (h):
Deviation (d):
Length (l):
Shortest slant line (m):
Longest slant line (n):
Central angle (α):
Largest angle (β):
Smallest angle (γ):
Estimated lateral surface (L):
Base area (B):
Volume (V):
Round to    decimal places.



Formulas:
h² + d² = l²
h² + (d-r)² = m²
h² + (d+r)² = n²

α = arccos [ ( d² + l² - h² ) / ( 2 * d * l ) ]
β = arccos [ ( (d-r)² + m² - h² ) / ( 2 * (d-r) * m ) ]
if d = r: β = 90°
γ = arccos [ ( (d+r)² + n² - h² ) / ( 2 * (d+r) * n ) ]

L ≈ 2 * r * d, for d / ( r + h ) → ∞
π
L = r *  ∫  [ r - d * cos(α) ]² + h²   dα
0
B = π * r²
V = 1/3 * B * h


Radius, height, deviation and lenghts have the same unit (e.g. meter), lateral and base surface have this unit squared (e.g. square meter), the volume has this unit to the power of three (e.g. cubic meter). The lateral surface is the curved part of the surface area.




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