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Each rectangle below has area 12 sq cm. Which one has the LONGEST perimeter?

Class 6Area of Combined ShapesMensuration
  • A3 cm × 4 cm
  • BAll are equal
  • C1 cm × 12 cm
  • D2 cm × 6 cm

Step-by-Step Solution

Perimeters: 2 × (1 + 12) = 26 cm, 2 × (2 + 6) = 16 cm, 2 × (3 + 4) = 14 cm. Same area does not mean same perimeter; the long thin one has the longest.
Answer: C) 1 cm × 12 cm

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