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प्रश्न
Find the surface area of a cube whose edge is 3 cm.
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उत्तर
\[\text { Edge of the a cube = 3 cm }\]
\[ \therefore\text { Surface area of the cube = 6 } \times\text { (side ) }^2 = 6 \times (3 )^2 = 6 \times 9 = 54 {cm}^2 \]
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