Question

Two cubes each of edge $12$ cm are joined end to end. Find the surface area of the resulting cuboid.

Answer 1

Length of the resulting cuboid
$=(12+12)cm$
$=24cm$
Breadth and height remaining the same i.e. 12 cm each
Surface area $=2(lb+bh+lh)$
$=2(24\times 12+12\times 12+24\times 12)c{m}^2$
$=1440c{m}^2$