(a)[1]
Method 1. Work out the mean thickness of $1$ sheet of paper, given that the folded paper has a thickness of $0.4\,\text{cm}$ and the folded sheet is $32$ sheets thick.
(b(i))[2]
Method 2. Work out the mean thickness of the pack from the readings $4.3\,\text{cm}$, $4.4\,\text{cm}$ and $4.3\,\text{cm}$. State your answer to $2$ significant figures.
(b(ii))[1]
Calculate the mean thickness of $1$ sheet of paper from your answer in (b)(i).
(c)[1]
State which method for measuring the mean thickness of a sheet of paper is the more accurate. Give one reason to support your choice.