Question

Find the surface area of the following cubes with length of edge
$4cm$
$3.2cm$

• A. $96c{m}^2;61.44c{m}^2$
• B. $90c{m}^2;61.44c{m}^2$
• C. $96c{m}^2;60.44c{m}^2$
• D. $92c{m}^2;61.44c{m}^2$

Answer 1

The correct option is A $96c{m}^2;61.44c{m}^2$

Total surface area$=6\left(4^2\right)=96c{m}^2$,for edge=4$c{m}^2$
Total surface area$=6\left({3.2}^2\right)=61.44c{m}^2$, for edge=61.44 $c{m}^2$