What volume and surface area are
Volume is the number of unit cubes that fill a solid.
Unit cube: a cube with edges of 1 unit. Surface area: the total area of all the faces of a solid.
Watch a prism fill up and unfold
Net: a flat pattern of all the faces of a solid. You can fold a net to make the solid.
Try it
Build a prism
- Move the sliders to change the length, the width, and the height.
- Click "Show the net" to see all 6 faces.
- Read the volume and the surface area.
Quick check
Answer 5 questions. You see your score at the end.