Compute area, surface area, and volume — and apply them to real measurement problems.
Each topic is a short page: read the walkthrough, watch the video, try the practice, then take a quick quiz. Go in order or jump to what you need.
The space inside flat shapes — rectangles, triangles, and parallelograms.
Split unusual shapes into simple ones you already know.
Volume fills the inside; surface area covers the outside.
By the end of this unit, you should be able to:
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