Why is displacement useful in finding the density of an irregularly shaped object?

Displacement is useful in finding the density of an irregularly shaped object because it allows for the determination of the object's volume without needing to measure its dimensions directly. By submerging the object in a fluid and measuring the volume of fluid displaced, one can accurately calculate the volume of the object. Once the volume is known, density can be calculated by dividing the object's mass by its volume, providing a straightforward method for irregular shapes. This technique leverages Archimedes' principle, ensuring precise volume measurement regardless of the object's complexity.