Question

What is the total surface area of a cuboid having length 2 cm, breadth 3 cm and height 4 cm ?

• A. 36 cm${}^2$
• B. 32 cm${}^2$
• C. 18 cm${}^2$
• D. 52 cm${}^2$

Answer 1

The correct option is D 52 cm${}^2$

TSA of a cuboid = $2(\text{lb}+\text{bh}+\text{hl})$, where l, b and h are length, breadth and height of the cuboid respectively.

$\therefore TSA=2\left[\right(2\times 3)+(3\times 4)+(2\times 4\left)\right]$
$=52{\text{cm}}^2$