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प्रश्न
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उत्तर
Length of each side of cube, l = 3 cm
∴ Total surface area of the cube = 6 × l2
= 6 × (3)2
= 6 × 9
= 54 cm2
संबंधित प्रश्न
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[Hint: Area of the four walls = Lateral surface area.]
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