Question

Find the total surface area of cuboid whose length , breadth and height and height are $8cm7cm$ and $4cm$ respectively.

Answer 1

$\Rightarrow$ Length of a cuboid $\left(l\right)=8cm$

$\Rightarrow$ Breadth of a cuboid $\left(b\right)=7cm$

$\Rightarrow$ Height of a cuboid $\left(h\right)=4cm$

$\Rightarrow$ Total surface area of cuboid $=2(lb+bh+hl)$

$=2(8\times 7+7\times 4+4\times 8)$

$=2(56+28+32)$

$=2\left(116\right)$

$=232c{m}^2$

$\therefore$ Total surface area of cuboid $=232c{m}^2$