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A solid cube changes its volume such tha...

A solid cube changes its volume such that its shape remains unchanged. For such a cube of unit volume show that,
rate of change of volume `= (3)/(2) xx `(rate of change of area of any face of the cube.).

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The correct Answer is:
rate of change of volume `= (3)/(2) xx `(rate of change of area of any face of the cube.). Prove
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