Connected rates of change

Connected rates of change

6 marks
TGM Original
A cube has volume increasing at 24 cm3/s. Find its surface-area growth rate when its edge is 2 cm.

Solution:

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Answer:\(\dfrac{\mathrm{d}S}{\mathrm{d}t}=48\ \mathrm{cm}^2/\mathrm{s}\).

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