Volume fills the inside; surface area covers the outside.
Read this first — it covers the idea in plain language with a worked example.
Volume is how much space fits inside a 3-D shape, measured in cubic units. For a rectangular prism (a box), volume = length × width × height.
Find the volume of a prism with edges 3, 4, and 5 units.
Surface area is the total area of all the faces. Unfold the box into a flat net so you can see and add up every face.
Tip
Area uses square units; volume uses cubic units. The exponent tells you the dimension.
Watch the main video, then check the second take if you want another explanation.
Try a worksheet or work through some problems before the quiz.
A couple of questions to make sure this topic stuck. Retake as many times as you want.
Surface Area & Volume
Find the volume of a rectangular prism with edges 3, 4, and 5 units.
