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WAEC Mathematics 2022 Question 40

Question 40

Mensuration of Solids

Find, correct to two decimal places, the volume of a sphere whose radius is 3cm. [Take π = 22/7]

  1. A.72.57cm3
  2. B.88.12cm3
  3. C.105.29cm3
  4. D.113.14cm3
Show the answer and explanation

Answer: D (113.14cm3)

Explanation

V = (4/3) × (22/7) × 27 = 792/7 ≈ 113.14 cm3.