Question

The length, breadth and height of a cuboid are $6cm$, $4cm$ and $5cm$ respectively. Find the total surface area of the cuboid.

Answer 1

Given, $l=6cm$, $b=4cm$, $h=5cm$
$\therefore$ Total surface area $=2(lb+bh+hl)$
$=2(6\times 4+4\times 5+5\times 6)c{m}^2$
$=2(24+20+30)c{m}^2$
$=2\times 74c{m}^2$
$=148{cm}^2$.