The volume of water displaced is equal to the volume of the object submerged into the water
circle does not have volume
One can easily calculate the weight of a 1 cm thick aluminum sheet in several ways. First, one can use a scientific scale for a very accurate measurement. Also, one can calculate the volume by submerging the sheet in water, and calculate the weight using the density of aluminum, which is 2.70 grams per cubic cm.
Displacement is the process used to find the volume of an irregular object. This is done by submerging the object in water and measuring either the height the water rises or the volume of water that overflows the container.
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Get a sample of the metal. Use a scale to find its mass. If it is shape is that of a rectangular solid (box) measure length, width, and height and multiply to find volume. If it is irregularly shaped, use the water displacement method to find its volume. Divide the mass by the volume to get the density.
Use the water displacement method
Method 1: You use integration. That is, you imagine that you slice it up into lots of thin slices, calculate the volume of each one (as area x thickness), and then add everything up.To calculate the area of each slice - if it is irregular - you also use integration. Cut it into thin strips, etc. Method 2: If it's an actual physical object, you can place it into a liquid, and see how much liquid is displaced. That's equal to the volume.
Use the formula for a cylinder.
mass/volume
For mass you use a triple-beam balance and for volume you use a graduated cylinder
by submerging it into a glass of water that has measurement lines and taking the difference between the original amount of water and the water with the object in it.You would use water displacement to find the volume of an irregular object.
A ruler is used to measure length and does not account for the height or width of an object, which are necessary to calculate its volume. To find the volume of a paperclip, you need to measure its dimensions in three dimensions using a tool such as a caliper or by using a water displacement method.