Geometry
Surface area
Name: Date:
Find the surface area of each box. All lengths are in centimetres.
1 cm²
2 cm²
3 cm²
4 cm²
5 cm²
6 cm²
Free · Grade 6 · Edges to 20 cm
Surface area and nets worksheets
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Ready to printSurface area and nets
The answer key prints on a separate page.
What's on this sheet
The net is the standard's own method rather than a decoration. A child who cannot yet hold three hidden faces in their head can find all six on a flat cross, count them into three matching pairs, and add. Once that works, the same child can look at the closed box and know what is behind it.
Why this sheet works
Only three numbers appear on either drawing, and that is the work: six faces come in three matching pairs, and realising that is what turns a long addition into 2(wd + wh + dh). Children who have just finished volume will often multiply all three numbers together, which is the confusion this practice exists to sort out.