Question
Find the surface area of a cube whose edge is: $2.1\ cm$
✓
Answer
Edge of the cube $(a) = 2.1m$
$\therefore$ Surface area $=6 \mathrm{a}^2=6 \times(2.1)^2 \mathrm{~m}^2$
$= 6 × 41 = 26.46m^2$
$\therefore$ Surface area $=6 \mathrm{a}^2=6 \times(2.1)^2 \mathrm{~m}^2$
$= 6 × 41 = 26.46m^2$
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