Question
$1m^2$ = ______ $mm^2$.

Answer

$1 \mathrm{~m}^2=\underline{100} \mathrm{~mm}^2$.
Solution:
We know that, $1 \mathrm{~cm}=10 \mathrm{~mm}$
$\therefore 1 \mathrm{~cm}^2=(10)^2 \mathrm{~mm}^2=100 \mathrm{~mm}^2$

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