Which statement correctly explains the concept of volume of a solid?
2026
Which statement correctly explains the concept of volume of a solid?
Answer: D. Volume is the amount of three-dimensional space occupied — ConceptA solid extends in three dimensions. Its volume measures the three-dimensional space that it occupies, and volume is expressed in cubic units. Length…
- A.
Volume is the length measured along one direction only
- B.
Volume is the mass contained in one unit of space
- C.
Volume is the total surface area covering the outer boundary
- D.
Volume is the amount of three-dimensional space occupied
Attempted by 3 students.
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Correct answer: D
Concept
A solid extends in three dimensions. Its volume measures the three-dimensional space that it occupies, and volume is expressed in cubic units.
Length is a one-dimensional measure, surface area measures a two-dimensional boundary, and density relates mass to occupied space; these quantities describe different properties.
Application
The statement “the amount of three-dimensional space occupied” directly expresses the definition of volume for a solid.
Contrast
“Length measured along one direction” describes length, whose unit is linear.
“Mass contained in one unit of space” describes density, which relates mass to volume.
“Total surface area covering the outer boundary” describes surface area, whose unit is square.
“Amount of three-dimensional space occupied” describes volume, whose unit is cubic.
Cross-check
Imagine filling a box completely with identical unit cubes. Counting those cubes measures the space inside the box, so the count gives its volume rather than its length, density, or boundary area.
Result
Therefore, volume is the amount of three-dimensional space occupied by the solid.