The length of an exercise book is given as 20cm correct to the nearest centimeter....
MATHEMATICS
WAEC 1994
The length of an exercise book is given as 20cm correct to the nearest centimeter. In which of the following ranges of possible measurement does the actual length lie?
- A. 19.5 - 20.4cm
- B. 19.1 - 20.9cm
- C. 19.9 - 20.1cm
- D. 19.95 - 20.05cm
Correct Answer: A. 19.5 - 20.4cm
Explanation
In mathematics, numbers ranging from 0.5 - 0.9 are approximated to 1, while 0.1 - 0.4 are taken down to 0.
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