Do you mean volume? If possible drop the item in a measured volume of water or other liquid and remeasure the volume, then subract the to numbers to get the volume of the item.
A balance is used to measure the mass of an irregularly shaped solid.
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.
Use volume displacement method.
It is used to find the volume of an irregularly shaped object. An object dropped into a volume of water will displace an equal volume of water.
Using a graduated beaker, add water sufficent to totally immerse the object. Note the initial volume of the water without the object. Put the irregularly-shaped object in the beaker and note the final volume. The difference between the final and initial readings is the volume of the object. This is only possible if the object is not soluble in water. If it is, use some other fluid in which it is not soluble.
A balance is used to measure the mass of an irregularly shaped solid.
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.
You can push it under water / under the liquid's surface, and measure the displacement of liquid.
Finding the center of gravity of an irregularly shaped object can be done using the plumb line method.
Force it below the surface of water and measure the force required.
well, for an irregularly shaped object it is a eureka can or a graduated cylinder, but for a regularly shaped object it is a simple formula: Length*Width*Height. I am 10 years old and learned that in science class.
yes you can use a balance to measure the volume of an irregular shaped solid.
the water displacement method
graduated cylinder
A beaker. Simply fill the beaker with a known quantity of liquid. Drop the object into the beaker, and measure the difference in the fluid levels.
Mass divided by Volume = Density. Or use the displacement method for an irregularly shaped object.
Asteroid