Depending on the size of the object this can be difficult. Use a large volumetric beaker, fill with a certain volume of water. Place the object into the water so that it is totally submerged. The displacement of water caused by the object will give you a new volume of water within the container. The difference in volumes give you the volume of your object.
the water displacement method
You can find the volume of an irregularly shaped object, like a rock, by using the water displacement method. Submerge the object in a known volume of water in a container. Measure the increase in water level, which equals the volume of the rock.
It depends on what the second method is!
Mass divided by Volume = Density. Or use the displacement method for an irregularly shaped object.
The volume of an irregularly shaped geometric object is typically determined by the amount of water it displaces when submerged. This method utilizes the principle of fluid displacement to calculate the volume of the object. By measuring the amount of water the object displaces, one can determine its volume.
To find the volume of an irregularly shaped object that would dissolve in water, you can use the water displacement method. Fill a known volume of water in a container, note the initial water level, then submerge the object in the water and measure the new water level. The difference in water levels is the volume of the object.
It is the displacement method.
Google "Archimedes' Principle" and see if that gives you a clue...
If the object in question is water proof, and small enough. You can measure the amount of displaced water when it is placed in a tank full of water, this may not work for a lot of things but it can help when attempting to measure some objects.
One way to calculate the volume of an irregularly shaped object is by using the water displacement method. Fill a container with a known volume of water, then submerge the object in the water and measure the change in water level. The difference in water level represents the volume of the object.
Half fill a graduated glass beaker with water and note the level. Place irregularly shaped object into the beaker. Note the new level. The difference between the two levels is the volume of the object. cw: OK, that method works for objects that don't get wet -- like steel. Tissue paper would not be a good candidate. Also, if the object floats, you have to submerge the object.
You can measure an irregularly shaped object by using a ruler, tape measure, or string to measure the object's length, width, and height, and then calculate its volume or surface area depending on the shape of the object. Alternatively, you can use a water displacement method by submerging the object in water and measuring the volume of water displaced to determine the object's volume.