The Mass or Weight of a Spherical Shell calculator computes the volume of a spherical shell with an outer radius (r) and a thickness (t). Spherical Shell INSTRUCTIONS: Choose your units (e.g. centimeters, inches or kilometers) and enter the following parameters:
Mass of the Spherical Shell (M): The mass is returned in kilograms. However the user can automatically convert the mass to other mass and weight units (e.g. grams, ounces, pound and tons) via the pulldown menu. To compute the Volume of a Spherical Shell, CLICK HERE.
The mass of a spherical shell can compute the amount of materials needed to coat any spherical object from a candy gumball to a submarine bathysphere.
To lookup the Mean Density of over 500 substances,CLICK HERE.
The equation calculate the Volume of a Sphere is V = 4/3•π•r³. This formula computes the difference between two spheres to represent a spherical shell, and can be algebraically reduced as as follows:
V = 4/3 π (r^{3}  (rt)^{3})
where:
Once the volume of the shell is known, this calculator then uses that volume with the mean density as follows:
The mean density (mD, μD or ρ) of many common substances, elements, liquids and materials can be found by clicking HERE (e.g. the μD_{(water)} is 1000.0 kg/m³).
Common Mean Densities 
Metals

Fluids
