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Question

The volume of a cube is 2744 cm3. Its surface area is __________.

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Solution


Let the edge of the cube be a cm.

Volume of the cube = 2744 cm3 (Given)

∴ a3 = 2744 cm3

⇒ a3 = (14 cm)3 (2744 = 2 × 2 × 2 × 7 × 7 × 7)

⇒ a = 14 cm

∴ Surface area of the cube = 6a2 = 6 × (14 cm)2 = 6 × 196 cm2 = 1176 cm2

Thus, the surface area of the cube is 1176 cm2.

The volume of a cube is 2744 cm3. Its surface area is ____1176 cm2____.

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