A hollow cube is formed by joining six identical squares A rectangular cello tape of length 4 cm and...........

Quantitative Aptitude (CDS) Mensuration 2D

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?

12 square cm

24 square cm

36 square cm

48 square cm

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Explanation:

Given that a rectangular cello tape of length 4 cm and breadth 0.5 cm is used for joining each pair of edges.
Thus, area of the cello tape used for each face of the cube is x².
Thus, total area of the cello tape used is 6x².
Now, we have 6x² = 6(4 x 0.5) (4 x 0.5) = 6 x 2 x 2 = 24 sq. cm.