Verified Solution Mathematics Quadratic Equations

A rectangular park is to be designed whose breadth is 5m less than its length. Its area is to be numerically equal to the perimeter of a square park whose side is equal to the length of the rectangular park. Find the length of the rectangular park.

5 views 1 helpful Updated Jul 14, 2026
Solution ✔ Verified
  • A8 m
  • B9 m
  • C10 m
  • D12 m
Explanation

Let the length of the rectangular park be L. Its breadth is L-5. Its area is L(L-5). The side of the square park is L, so its perimeter is 4L. Setting the area equal to the perimeter: L(L-5) = 4L. This simplifies to L² - 9L = 0. Factoring gives L(L-9)=0. Since L cannot be 0, L=9 meters.

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