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If the length of longest diagonal of a cube is 6 √3 cm. Find its surface area?

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If the length of longest diagonal of a cube is 6 √3 cm. Find its surface area?
1). 236 cm2
2). 246 cm2
3). 256 cm2
4). 216 cm2


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Answered by on | Votes 0 |

Longest Diagonal of a cube = a√3 = 6√3

⇒ a = 6 cm

⇒ Surface area of cube = 6 × a2 = 6 × 62

∴ 6 × 36 = 216 cm2

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