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ACS Junior 2025 P6 Maths Prelim — Paper 1 Booklet A Q7 Solution
Question
A prism has two right-angled triangular faces and three rectangular faces.
Which of the following will complete the net of the prism?
- 1. A rectangle with width 3 cm and height 6 cm.
- 2. A rectangle with width 4 cm and height 6 cm.
- 3. A rectangle with width 5 cm and height 6 cm.
- 4. A rectangle with width 6 cm and height 6 cm.
Answer: 3
Worked solution
- \text{The prism has two right-angled triangular faces with legs 3 cm and 4 cm
- hypotenuse} = \sqrt{3^2 + 4^2} = 5 \text{ cm}
- \text{Missing rectangular face has dimensions } 5 \text{ cm} \times 6 \text{ cm}
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