Question
Find the surface area of a cube whose edge is: $27\ cm$

Answer

Edge of cube $(a) = 27\ cm  $
$ \therefore \text { Surface area }=6 a^2=6 \times(27)^2 \mathrm{~m}^2 $
$ =6 \times 729=4374 \mathrm{~m}^2 $

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