Write 0.4 as a percentage. $$\(\%\)$$ (1) (b) What is 42 out of 80 as a percentage? $$\(\%\)$$ (2) (c) Work out $$\(72 \%\)$$ of $$\(350 \mathrm{~cm}\)$$. $$\(\mathrm{cm}\)$$ (2)

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