WAEC Mathematics 2024 Objective — Question 14
Question 14 of 50 from the West African Examinations Council (WAEC) Mathematics 2024 Objective paper, with the correct answer and a full explanation.
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14. A cylindrical metallic barrel of height 2.5 m and radius 0.245 m is closed at one end. Find, correct to one decimal place, the total surface area of the barrel. [Take π = 22/7]
- A. 2.1 m²
- B. 3.5 m²
- C. 4.0 m²Correct
- D. 9.4 m²
Explanation
TSA = πr(2h+r) = (22/7)(0.245)[2(2.5)+0.245] ≈ 4.0 m² (1 d.p.).
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