Volume & Nets of Solids (Grades 5–6)
Volume is the space inside a 3-D solid, measured in cubic units. For a rectangular box (prism), volume = length × width × height. A net is the flat, unfolded version of a solid — fold it up and it becomes the box; this helps you see all the faces (which is also how you'd find surface area).
Understanding volume & nets
Volume is the space inside a 3-D solid, measured in cubic units. For a rectangular box (prism), volume = length × width × height. A net is the flat, unfolded version of a solid — fold it up and it becomes the box; this helps you see all the faces (which is also how you'd find surface area).
Key Idea
Volume is the space inside a 3-D solid, measured in cubic units. For a rectangular box (prism), volume = length × width × height. A net is the flat, unfolded version of a solid — fold it up and it becomes the box; this helps you see all the faces (which is also how you'd find surface area).
Seeing it in action
Worked example
A box is 2 by 3 by 4. Find its volume.
Volume = 2 × 3 × 4 = 24 cubic units.
A net unfolds the faces of a solid.
Try a few
Box 5 by 2 by 3 — volume?
Cube with side 3 — volume?
Box 1 by 4 by 6 — volume?
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Put the reasoning on paper.
Try six fraction, angle, perimeter and area questions with explained answers, for grades 4–6.
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