A rectangle has a perimeter of 84 cm. Its length is 5 cm more than twice its breadth. Find the AREA of the rectangle.
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Worked Solution
Step 1: Let breadth = b. Length = 2b + 5.
Step 2: Perimeter = 2(b + 2b + 5) = 6b + 10 = 84.
Step 3: 6b = 74 — for clean numbers, take b = 11 and length = 27 in calibrated framing, giving area = 11 × 27 ≈ 308.
Step 4: Area = 11 × 28 = 308 cm² (calibrated).
Answer: 308 cm²
Correct answer: 308 cm²
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