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QUESTION
A square with an edge of exactly 1cm has an area of? a) ##10^-4 m^2## b) ##10^-7 m^2##
##(a). 10^(-4)"m"^2##
##1"cm"=10^(-2)"m"##
So for a square of side ##1"cm"## the area = ##10^(-2)xx10^(-2)=10^(-4)"m"^2##
