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Tao Nan 2025 P6 Maths Prelim — Paper 1 Booklet A Q13 Solution

Paper 1 Booklet A · Q13 · 2 marks · Volume of Cube and Cuboid

Question

Farah glued 64 cubes of side 1 cm to form the solid shown. She painted the whole solid red, including the base. How many cubes of side 1 cm have only 2 faces painted red?

1. 16
2. 18
3. 24
4. 32

Answer: 3

Worked solution

\text{From the solid, count unit cubes lying along the edges (excluding corners)}
\text{Cubes with exactly 2 faces painted} = 24

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