Civil Service Exam Reviewer · Measurement and Geometry · hard
The length and width of a rectangle are in the ratio 4 : 3, and its perimeter is 70 m. What is its area?
- 60 m²
- 306.25 m²
- 300 m²
- 600 m²
Answer
C. 300 m²
Solution
2(4k + 3k) = 70 → k = 5. Length = 20, width = 15. Area = 300 m².
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