A student is asked to determine the thickness of a sheet of A4 paper.she is given a new unwrapped packet of paper which contains 500 sheets.She unwrap the paper and measures the thickness of the pack.The thickness is 49mm.
a.Why does she unwrap the packet before measuring the thickness?
b.Calculate the thickness of one sheet of paper .Give your answer in standard
form(i) in mm and (ii) in m
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