Question

Find the total surface of cuboid whose length is $8cm$ breadth is $6cm$ and height is $5cm.$

Answer 1

$l=8cm$

$b=6cm$

$h=5cm$

$\therefore T.S.A=2\left(lb+bh+hl\right)$

$=2\left\{\left(8\times 6\right)+\left(6\times 5\right)+\left(8\times 5\right)\right\}c{m}^2$

$=2\times \left\{48+30+40\right\}c{m}^2$

$=2\times 118c{m}^2$

$=236c{m}^2$

We get, $T.S.A=236c{m}^2.$