When it comes to determining the volumes of metal samples, the accuracy of the method used can vary considerably based on the approach taken. Measuring dimensions involves calculating volume based on geometric formulas, while water displacement relies on the principle that an object submerged in water will displace an amount of water equal to its own volume.
Measuring dimensions can be less accurate for several reasons. First, it requires precise measurement of length, width, and height. Even a small error in measuring these dimensions can lead to significant discrepancies in the calculated volume, especially for irregularly shaped objects where calculating the geometric volume becomes complex.
On the other hand, water displacement tends to provide a more direct and practical method for measuring volume, especially for irregularly shaped items where dimensions are difficult to measure accurately. This method utilizes the physical properties of water and can yield results that reflect the true volume of the object more reliably.
However, it’s important to ensure that the water is free of bubbles and that the object is fully submerged for the most accurate results. Overall, for solid and regularly shaped metal samples, calculating dimensions can be acceptable, but water displacement often proves to be a more reliable method, particularly for complex shapes.