Foundation Mathematics Primary 4 Geometry

Wei Lin wants to fold a flat shape into a closed cube with no gaps and no overlaps. How many equal squares must her flat shape (the net) have in total?

A 6
B 4
C 8
D 5
Show Worked Solution

Worked Solution

Step 1: Recall that a cube is a 3D solid bounded by flat faces, all of which are squares. Step 2: Count the faces of a cube — there is 1 top, 1 bottom, and 4 sides, giving 6 faces. Step 3: A net is the unfolded outline of every face, so the net must contain one square for each face. Final: A net of a cube has 6 equal squares. Answer: 6

Correct answer: 6

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