2023 SQA Adv. Higher Maths Paper 2 Nos. 11 & 12

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Quickly going through the solutions to questions 11 and 12 from paper 2 of the SQA 2023 Advanced Higher mathematics examination. These have not been checked for any errors which may have occurred in haste.
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You can check you've got Q11 right by looking at the area of the circle at height 125cm which is 17671cm^2 and 10000 / 17671 gives you 0.57 as well so at least that's consistent (the height of the cylinder at that point would be 0.57cm)

eddyrichards
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How many marks would you lose if you forgot to convert litres to cm3 but did everything else

ruaridhmiller