- A50 sq cm
- B25 sq cm
- C100 sq cm
- D75 sq cm
Step-by-Step Solution
Two separate cubes = 25 = 300. Joining hides 2 faces (one from each), each 25, so reduction = sq cm.
Answer: A) 50 sq cm
Two cubes each of edge 5 cm are placed side by side to form a cuboid.
By how much is the surface area of the cuboid less than the combined surface area of the two separate cubes?
Class 8Surface Area of Cuboid and CubeMensuration
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