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If the diagonal of the cube is , find its surface area.

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answer is A.

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Detailed Solution

Concept: Let, the side of the cube be a variable. Now, we are given the length of the diagonal of the cube, and we have to find the surface area of the cube where,

. Now, to calculate the side of the cube apply the formula

Let, the side of the cube be

Given that,
Diagonal of the cube

As we know that,

It implies that,

Therefore, the side of the cube is

Now, for the surface area of cube
Using,

Hence, the correct answer is option 1)

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