AS Core Pure 2018 Pearson Edexcel Further maths

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Hi would you be able to make more videos on as fm, as i have my end of years coming up and this video really helped

leofox
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Hi, I have been stuck on 9(b) for a while. The curve GF from x=1 to x=4 doesn't meet the y-axis, meaning the volume of revolution is like a hollow donut shape. Doesn't this mean that cylinder ABGH should have height 14cm, to account for the missing volume?

KiranPatel-wljz