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Q.

If the diagonal of a cube is 9√3 cm long, then its total surface area is

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a

486 cm2

b

468 cm2

c

456 cm2

d

496 cm2

answer is C.

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Detailed Solution

Diagonal of cube =a3=93⇒a=9

Total surface area of cube =6a2=6(9)2=486cm2

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