Question

A cuboid has a length $\left(l\right)$ of 10 cm, breadth $\left(b\right)$ of 12 cm and height $\left(h\right)$ of 15 cm. Find the total surface area of the cuboid.

• A. $660c{m}^2$
• B. $550c{m}^2$
• C. $260c{m}^2$
• D. $900c{m}^2$

Answer 1

The correct option is D $900c{m}^2$

Total surface area of a cuboid $=2(l\times b+b\times h+h\times l)$
$=2(10\times 12+12\times 15+15\times 10)$
$=2(120+180+150)$
$=2\left(450\right)$
$=900c{m}^2$