The GATE Grind

GATE 2024 CS (CS1) – Question 9

General Aptitude · Spatial Aptitude: Spatial Reasoning and Visualization · 2 marks · Multiple choice

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

  1. 18
  2. 24
  3. 20
  4. 21

Practise this question in The GATE Grind →

Show answer and explanation

Correct answer: (D) 21

Explanation

Each fold halves the long edge: 20 → 10 → 5 → 2.5. Final sheet is 2.5 × 8, perimeter = 2(2.5+8) = 21 cm.