WAEC Mathematics 2025 Objective — Question 18
Question 18 of 51 from the West African Examinations Council (WAEC) Mathematics 2025 Objective paper, with the correct answer and a full explanation.
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A solid cuboid has length 7 cm, width 5 cm and height 4 cm. Calculate its total surface area.
- A. 280 cm^2
- B. 166 cm^2Correct
- C. 140 cm^2
- D. 83 cm^2
Explanation
Total surface area = 2(lb+bh+lh) = 2(7x5+5x4+7x4) = 2(35+20+28) = 2(83) = 166 cm^2.
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