WAEC Mathematics 2022 Objective — Question 40
Question 40 of 50 from the West African Examinations Council (WAEC) Mathematics 2022 Objective paper, with the correct answer and a full explanation.
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Find, correct to two decimal places, the volume of a sphere whose radius is 3cm. [Take π=22/7].
- A. 72.57 cm³
- B. 88.12 cm³
- C. 105.29 cm³
- D. 113.14 cm³Correct
Explanation
Volume = (4/3)πr³ = (4/3)×(22/7)×3³ = (4/3)×(22/7)×27 = 2376/21 = 113.14 cm³.
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