a conical water-jug is 7cm in diameter and 6cm deep. find the volume of water...
MATHEMATICS
WAEC 2006
a conical water-jug is 7cm in diameter and 6cm deep. find the volume of water it can hold. [Take \(\pi = \frac{22}{7}\)]
- A. 22cm2
- B. 44cm3
- C. 77cm3
- D. 308cm3
Correct Answer: C. 77cm3
Explanation
Volume = \(\frac{1}{3} \pi r^2h = \frac{1}{3} \times \frac{22}{7} \times \frac{7}{2} \times \frac{7}{2} \times \frac{6}{1}\)
V = \(\frac{6468}{84}\)
= 77cm3
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