The density of lead is well known; you can look it up in any reference book on chemistry, or on the internet. It is 11.34 grams per cubic centimeter, according to Wikipedia. But if you have a sphere that is only part lead, you can get the density of the sphere by weighing it, and dividing the weight by its volume. The volume of a sphere is 4/3 x pi x r ^ 3, where r is the radius of the sphere.
mass over volume
calculate the volume using the formula: Vsphere = (4/3)*pi*r^3 then calculate density by Density = Mass/Volume
Measure the diameter and from that calculate the volume, then determine the mass of the sphere on a weighing device. Then it's just density = mass/volume ========================== It again depends on the sphere whether its hollow or its a solid sphere
a gold sphere
The sphere made from the least dense material. If this is for a specific math problem, you may have to calculate density by dividing mass / volume for each sphere. The question could be about the "four spheres of the Earth" : Atmosphere Biosphere Hydrosphere Lithosphere. In that case the answer is the "atmosphere".
how do you find the mass of a sphere Volume x density => 4/3(pi)(r)3 x density
weight the metal ball first. then fill a graduated cylinder with water- it doesnt really matter how much, and put the metal ball in the water. measure how much the water level has increased by in mL. take the mass, and divide by the mL of water and then you get the density. ++ If it's an accurate sphere you can also measure its diameter and so calculate the volume, from which and the mass you can calculate the density.
Divide its mass by its volume.
The mass of a sphere is 4/3*pi*r3*d where r is the radius of the sphere and d is the density of the material of the sphere.
How can you calculate surface density if the volume density is 1.4 g/cm3
As an approximation you can assume the snowball is a pefect sphere and calculate its volume. But you will still need to know the snowballs density. As another approximation you could use the density of ice at its freezing point.
how do you calculate density