Question

l=12 surface of cube

Answer 1

Heya !

$a = 6a^{2}$
$6(12) ^{2}$
$= 864$

Hope this helps you

Answer 2

HERE IS YOUR ANSWER::::

l=12
LSA of the cube=4l^2=4x12^2=4x144=576
TSA of the cube=6l^2=6x12^2=6x144=864

hOpe iT helPs....