GATE 2024 MT – Question 9
A rectangular paper of 20 cm × 8 cm is folded 3 times. Each fold is made along the line of symmetry, which is perpendicular to its long edge. The perimeter of the final folded sheet (in cm) is
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Correct answer: (A) 18
Explanation
Each fold halves the current longer dimension.
Dimensions progress 20×8→10×8→5×8→5×4 cm.
The final perimeter is 2(5+4)=**18 cm, A**.
Continuing to halve the original 20 cm dimension at every step would ignore the changing long edge.