Mathematics (AS & A Level) · Oct / Nov 2021 · Paper 12 · Question 9
9709
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The question as text
The volume V m3 of a large circular mound of iron ore of radius r m is modelled by the equation V = 3 2 r −1 2 3 −1 for r ≥2. Iron ore is added to the mound at a constant rate of 1.5 m3 per second.
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9(a)[3]
9(b)[3]
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