You cannot.
If you are given the density, the volume of the object, and the area over which the object rests, then it is possible to find the pressure. If density is "d", volume is "v", and area is "a" then pressure p = (d x v x g)/a where g is the acceleration due to gravity.
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Bulk density = dry weight / volume, then by knowing the dry weight and bulk density we can calculate the volume.
You have to multiply the density by the volume to get the mass of the object.
Density = Mass/Volume so Volume = Mass/Density. Provided the object is solid.
It isn't clear what you want to calculate.
If it is normal density you cannot because that is mass/volume. You would need to know either the linear density or the cross sectional area.