A soil sample collected with a cylindrical core sampler having height of 15 cm and diameter of 6 cm has a fresh weight of 500 g and oven dry weight of 450 g. Calculate bulk density
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Always use the oven-dry weight of the soil, not the fresh weight, to calculate bulk density.
Ensure core volume calculations are carried out using the radius ($r = d/2$) in the cylinder volume formula: $V = \pi r^2 h$.