John pours 96 litres of red oil into a rectangular container with length 220cm and
MATHEMATICS
WAEC 2011
John pours 96 litres of red oil into a rectangular container with length 220cm and breadth 40cm. Calculate, correct to the nearest cm, the height of the oil in the container
- A. 11cm
- B. 18cm
- C. 21cm
- D. 34cm
Correct Answer: A. 11cm
Explanation
volume of rectangular container = L x B x H
1 litre = 1000cm3
96 litres = \(\frac{1000cm^3}{1 litres}\) x 96 litres
volume = 96000cm3
96000 = 220 x 40
96--- = 8800H
H = \(\frac{96000}{8800}\)
= 10.97cm
= 11cm
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