Question

Two cubes, each of side $4cm$ are joined end to end. Find the surface area of the resulting cuboid.

Answer 1

If two cubes of sides $4cm$ are joined end to end, then the length $\left(l\right),$ breadth $\left(b\right)$ and height $\left(h\right)$ of the resulting cuboid are $8cm,4cm,$ and $4cm,$ respectively.

$\therefore$ Surface area of the resulting cuboid $=2(lb+bh+lh)$
$=2(8\times 4+4\times 4+8\times 4)c{m}^2$
$=2\times (32+16+32)c{m}^2$
$=160c{m}^2$
Thus, the surface area of the resulting cuboid is $160c{m}^2$.