NECO Mathematics 2022 Objective — Question 40
Question 40 of 50 from the National Examinations Council (NECO) 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 pi=22/7]
- A. 72.57cm^3
- B. 88.12cm^3
- C. 105.29cm^3
- D. 113.14cm^3Correct
Explanation
Volume of sphere = (4/3)*pi*r^3 = (4/3) x (22/7) x 3^3 = 113.14cm^3.
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