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Classes
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Grade 6
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Area, volume and surface area
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Calculating the surface area of cubes and cuboids
Calculating the surface area of cubes and cuboids
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Concept 1 of 3 · no score 🙂
A cube: one face times six
Unfold the box: six faces, in three pairs
8 × 3 = 24
15
8 × 5 = 40
15
24
40
a cuboid 8 × 5 × 3
2 × 40 = 80
2 × 24 = 48
2 × 15 = 30
158 cm²
Forgetting to double is the classic mistake — six faces, not three.
Surface area is in
square
units; volume is cubed.
1
A cube of side 2 cm.
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