Surface area of cuboids
The Maths Habit
Both boxes hold the same amount.
Which needs more wrapping paper?
Box B
- Face
- A flat side of a 3D shape.
- Net
- A 3D shape opened out flat.
- Surface area
- The total area of all the faces.
Work out the surface area.
Work out the surface area.
Surface area = 92 cm2
Matching faces come in pairs.2 × (24 + 16 + 6) = 92 cm2
Answer92 cm2
Surface area = 150 cm2
Matching faces come in pairs.2 × (36 + 27 + 12) = 150 cm2
Answer150 cm2
Surface area = 92 cm2
Matching faces come in pairs.2 × (24 + 16 + 6) = 92 cm2
Answer92 cm2
Surface area = 142 cm2
Matching faces come in pairs.2 × (35 + 21 + 15) = 142 cm2
Answer142 cm2
Surface area = 92 cm2
Matching faces come in pairs.2 × (24 + 16 + 6) = 92 cm2
Answer92 cm2
Surface area = 88 cm2
Matching faces come in pairs.2 × (12 + 24 + 8) = 88 cm2
Answer88 cm2
Surface area = 92 cm2
Matching faces come in pairs.2 × (24 + 16 + 6) = 92 cm2
Answer92 cm2
Surface area = 96 cm2
Matching faces come in pairs.2 × (16 + 16 + 16) = 96 cm2
Answer96 cm2
Surface area = 92 cm2
Matching faces come in pairs.2 × (24 + 16 + 6) = 92 cm2
Answer92 cm2
Surface area = 220 cm2
Matching faces come in pairs.2 × (40 + 50 + 20) = 220 cm2
Answer220 cm2
A cube has a surface area of 96 cm2. How long is each edge?
4 cmA room is 4 m long, 3 m wide and 2.5 m high. The four walls are painted, but not the floor or the ceiling. What area is painted?
35 m2
Work out the surface area of each box.
A is 600 cm2 B is 700 cm2
Work out the surface area of the cuboid.
62 cm2An open box has no lid. It is 6 cm long, 4 cm wide and 3 cm high. Work out its outside surface area.
84 cm2A cube has a surface area of 150 cm². How long is each edge?
5 cm
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