a) 225 cm2
b) 234 cm2
c) 270 cm2
d) 279 cm2
Answer: b
Explanation: 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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