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प्रश्न
Find the surface area of a cube whose edge is 1.2 m.
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उत्तर
\[\text {Edge of the a cube = 1 . 2 m } \]
\[ \therefore \text { Surface area of the cube = 6 } \times \text { (side ) }^2 = 6 \times (1 . 2 )^2 = 6 \times 1 . 44 = 8 . 64 m^2 .\]
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