Mathematics (AS & A Level) · Oct / Nov 2023 · Paper 11 · Question 3
9709
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x x x The diagram shows a cubical closed container made of a thin elastic material which is filled with water and frozen. During the freezing process the length, xcm, of each edge of the container increases at the constant rate of 0.01cm per minute. The volume of the container at time t minutes is V cm3. Find the rate of increase of V when x = 20. [3]
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