The perimeter of a rectangle whose length is 6 m more than its breadth is 84 m. What is the area of the rectangle?

Correct answer: 432

Solution

Let breadth = x and length = x + 6. Then 2(x + x + 6) = 84, so 4x + 12 = 84 and x = 18. Hence length = 24, and area = 18 × 24 = 432 m².

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