Except for one face of a given cube, identical cubes are glued through their faces to all the other faces of the given cube. If each side of the given cube measures 3 cm, then what is the total surface area of the solid body thus formed ?
Options:
A . 225 cm2
B . 234 cm2
C . 270 cm2
D . 279 cm2
Answer: Option B Clearly, each of the 5 faces of the given cube are glued to a face of another cube ∴ Total surface area of the solid : = 5 × 5a2 + a2 = 26a2 = (26 × 32) cm2 = 234 cm2
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