If the length of diagonal of a cube is 8√3 cm, then

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If the length of diagonal of a cube is 8√3 cm, then its surface area is ?

1. 512 cm²
2. 384 cm²
3. 192 cm²
4. 786 cm²

Correct Option: B

∵ √3a = 8√3
⇒ a = 8
∴ Surface area = 6a²
= (6 x 8 x 8) cm²
= 384 cm²