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The area of a square is $\"\"$ , where $\"\"$ is side length of cube.

Find the rate of the change of area with respect to $\"\"$ .

Apply derivative on each side with respect to $\"\"$ .

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Rate of change of area when side of the cube is $\"\"$ cm :

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Rate of change of area when side of the cube is $\"\"$ cm is $\"\"$ .

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Rate of change of area when side of the cube is $\"\"$ cm is $\"\"$ .