They are both the same. displacement method is another name for Archimedes' principle
No. The answer to this multiple-choice question is that he discovered "displacement", famously seeing water spill out of his filled bathtub when he got into it. ("Eureka!")
Archimedes
Legend says that Archimedes discovered the principle of displacement while stepping into a full bath. He realized that the water that ran over equaled in volume the submerged part of his body. Through further experiments, he deduced the above mentioned Archimedes' principle.
If you are talking about water displacement, it is the Greek philosopher Archimedes who is credited with that.
The water overflowed when Archimedes jumped in and he knew that there is a relationship between his weight and the volume of the water
One method to find the volume of an irregular solid is by using the water displacement method. This involves submerging the solid in a known volume of water and measuring the increase in water level, which corresponds to the volume of the solid.
Archimedes is credited with discovering how to measure the volume of irregular objects by using water displacement. This method allowed him to determine the volume of an object by measuring the amount of water it displaced when submerged in a container. The famous story goes that he made this discovery while taking a bath, leading to his exclamation "Eureka!" which means "I have found it" in Greek.
Yes
Displacement of water is an indirect measurement because we cannot directly measure the volume of an irregularly shaped object. By measuring the water displaced when the object is submerged, we can indirectly determine the volume of the object based on the volume of water displaced, according to Archimedes' principle.
Displacement method.... Is the method to find volume of an irregular object
I think it is the volume displacement. When you put an object into a container with a known volume of water, the water will rise, and that change of volume is the volume of the object you introduced into the container.