A rectangular plot of land has sides with lengths of 38 m and 52 m
MATHEMATICS
JAMB 2023
A rectangular plot of land has sides with lengths of 38 m and 52 m correct to the nearest m. Find the range of the possible values of the area of the rectangle
- A. 1931.25 m\(^2\) ≤ A < 2021.25 m\(^2\)
- B. 1950 m\(^2\) ≤ A < 2002 m\(^2\)
- C. 1957 m\(^2\) ≤ A < 1995 m\(^2\)
- D. 1931.25 m\(^2\) ≥ A > 2021.25 m\(^2\)
Correct Answer: A. 1931.25 m\(^2\) ≤ A < 2021.25 m\(^2\)
Explanation
The sides have been given to the nearest meter, so
51.5 m ≤ length < 52.5
37.5 m ≤ width < 38.5
Minimum area = 37.5 x 51.5 = 1931.25 m\(^2\)
Maximum area = 38.5 x 52.5 = 2021.25 m\(^2\)
∴ The range of the area = 1931.25 m\(^2\) ≤ A < 2021.25 m\(^2\)
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