Question

10.

Answer 1

Solution:

• Given, side (a) = x+3
• We know, surface area of a cube = 6a^2
• Therefore, the surface area of the cube

$6(x + 3) ^{2} \\ = 6( {x}^{2} + 6x + 9) \\ = 6 {x}^{2} + 36x + 54$

Answer:

The answer is

${6x}^{2} + 36x + 54$

Hope it helps.

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