Which method is commonly used to determine the volume of an irregularly shaped object?

• A. By calculating length × width × height
• B. By weighing the object and dividing by its density
• C. By using a ruler to measure its circumference
• D. By measuring the amount of water displaced when the object is submerged

Answer: (D)

Verified step by step guidance

1. Understand that regular-shaped objects have easily measurable dimensions (length, width, height) that can be multiplied to find volume, but irregular objects do not have simple geometric shapes.
2. Recall that density and mass can be used to find volume by the formula \(\text{Volume} = \frac{\text{Mass}}{\text{Density}}\), but this requires knowing the object's density, which may not always be available or accurate.
3. Recognize that measuring circumference with a ruler is useful for circular or cylindrical objects but does not directly give volume, especially for irregular shapes.
4. Learn that the most common and practical method for finding the volume of an irregularly shaped object is to submerge it in water and measure the volume of water displaced, based on Archimedes' principle.
5. This displacement method works because the volume of water displaced is equal to the volume of the object submerged, allowing you to determine the object's volume without complex measurements.