The Mass or Weight of an Oblate Spheroid calculator computes the volume of an oblate spheroid based on the semimajor(b) and semi minor (c) axis with the assumption that the spheroid is generated via rotation around the minor axis (see diagram).
INSTRUCTIONS: Choose your length units for a and b (e.g. feet, meters, lightyears), and enter the following:
Oblate Spheroid Mass / Weight: The mass (M) is returned in kilograms. However, this can be automatically converted to other mass and weight units (e.g. tons, pounds) via the pulldown menu.
The oblate spheroid is an ellipsoid that can be formed by rotating an ellipse about its minor axis. The rotational axis thus formed will appear to be the oblate spheroid's polar axis. The oblate spheroid is fully described then by its semimajor and semiminor axes.
One important shape in nature that is close to (though not exactly) an oblate spheroid is the Earth which has a semiminor axis (c) which is the polar radius of 6,356 kilometers, and a semimajor axis (b) which is the equatorial radius of 6,378 kilometers. Consideration: what force would make the equatorial radius larger than the polar radius?
Metals are materials characterized by its physical and chemical properties, primarily its ability to conduct electricity and heat, its luster or shine when polished, its malleability (ability to be hammered or pressed into shapes), and its ductility (ability to be drawn into wires). Metals typically have a crystalline structure and are found naturally in solid form (with the exception of mercury, which is a liquid at room temperature).
Metals Densities

Metals make up a large portion of the periodic table of elements, with examples including iron, copper, gold, silver, aluminum, and titanium, among many others. Metals are essential in various industries such as construction, manufacturing, electronics, transportation, and energy production due to their unique properties and versatility.
Metals are generally dense materials. Density is a measure of how much mass is contained in a given volume. Metals tend to have high densities because their atoms are closely packed together in a crystalline structure. This close packing of atoms contributes to their characteristic properties such as strength, malleability, and conductivity.
However, it's important to note that the density of metals can vary widely depending on factors such as their elemental composition, crystal structure, and any impurities present. For example, some metals like lead and platinum are denser than others like aluminum or magnesium.
The Weight of Metal Calculator contains functions and data to compute the weight (mass) of metal objects based on their size, shape and the density of the metal. The Weight of Metal functions are:
For the mean densities of other substances click HERE.
The following table contains links to calculators that compute the volume of other shapes:
Other Volume Calculators  
Various Shapes  Polygon Columns  
Cube  Triangular Prism  Triangular  
Box  Paraboloid  Quadrilateral  
Cone  Polygon based Pyramid  Pentagon  
Cone Frustum  Pyramid Frustum  Hexagon  
Cylinder  Sphere  Heptagon  
Slanted Cylinder  Sphere Cap  Octagon  
Ellipsoid  Oblate Spheroid  Nonagon  
Torus  Capsule  Decagon 