Remember: A net is a solid unfolded flat. Add the areas of its faces to get the surface area.
Which solid?
1
A net is a solid unfolded flat. A net with 6 equal squares folds into which solid?
ABCD
2
A net has one square and four triangles. Which solid does it fold into?
ABC
3
How many squares are in a net of this cube? Answer:
4
This strip of 6 squares in a row folds into a cube.
TrueFalse
Faces and surface area
5
The top of this box is 4 long and 3 wide. Each cube is 1 unit. What is the area of the top face, in square units? Answer:
6
The net of this box has 3 pairs of matching faces, listed below. Add the area of all six faces. What is the surface area? Answer:
7
Join each solid to the faces on its net.
1cube
2square pyramid
3triangular prism
4triangular pyramid
A1 square and 4 triangles
B2 triangles and 3 rectangles
C6 equal squares
D4 triangles
8
How many faces of this box are 5 by 3? Answer:
9
Mia makes a model cube from card. Each edge is 4 meters long. How many square meters of card cover every face? Answer:
Stretch
10
A cube has an edge of 3 cm. Which calculation gives its surface area?
6 × 33 × 3 × 36 × 3 × 34 × 3 × 3
11
Use the net of this box to find its surface area, in square units. Answer:
12
Explain why a strip of six squares in a row cannot fold into a cube.
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