In a sandy soil, the maximum and minimum void ratios were determined to be 0.725 and 0.465, respectively. The specific gravity of the soil grains is 2.65.

a. What would be the relative density of this sand compacted to a dry unit weight of 16.46 kN/m³?

b. Assuming the maximum dry unit weight of the sand determined from the compaction is the same as the one corresponding to e_min, determine the relative compaction of the soil.