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1. The ratio between the length and breadth of a field is 7 : 5. The perimeter of the field is 360 meter. What is the area of the field?
- A. 31000 sq. meter
- B. 31000 sq. meter
- C. 31000 sq. meter
- D. 31000 sq. meter
Answer: Option C
Explanation:
Let the length and breadth be 7x and 5x meters respectively.
Then, perimeter, 2(7x + 5x) = 360
or, 2×12x = 360
or, 24x = 360
or, x = 360/24 = 15
Area = length×breadth = 7x × 5x = 35x2 = 35×152 = 35×225 = 7875 m2
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