Not sure how a radio can help.
If you are given the radius (including units) of a sphere, the volume is 4/3*pi*r3 cubic units. Then mass = density*volume, in the appropriate units.
Multiply them: density*volume = mass
Volume = mass / density
Density = (mass) divided by (volume)Mass = (Density) times (volume)
You can find the mass of the object by multiplying volume and density.
Density = mass/volumeMass = (density) x (volume)Volume = mass/density
Density = Mass/Volume So you'd need the mass.
v= m/d v is volume m is mass d is density
The formula to find the density is d=m/v
You need also the mass of the material: volume = mass/density. After you measure the mass of the object, then divide by the density, to find volume.
You can't. In order to calculate a density, you need a mass and a volume.
The smoke from a given volume of air is collected on a preweighed paper filter; density is mass/volume.
Well its quite easy: Density=Mass/Volume Volume=Mass/Density SO if mass and density of a cube are given you can easily find its volume.