2017 · Q57
A hollow cube is formed by joining six identical squares. A rectangular cello tape of length 4 cm and breadth 0.5 cm is used for joining each pair of edges. What is the total area of cello tape used ?
Elementary MathematicsMensuration
- A12 square cm
- B24 square cm
- C36 square cm
- D48 square cm
Explanation
A cube has 12 edges, so 12 tapes are used. Each tape is 4 cm × 0.5 cm = 2 cm², giving 12×2 = 24 cm² in total. Hence option (B) 24 square cm.