Question

The dimensions of a luggage box are 80 cm, 60 cm and 40 cm. How many sq. cm of cloth is required to cover the box?

• A. 10400 sq. cm
• B. 20800 sq. cm
• C. 20400 sq. cm
• D. 10200 sq. cm

Answer 1

Answer:

B. 20800 sq. cm

Dimension of luggage box is $80cm\times60cm\times40cm.$

Let $a=80cm,b=60cm,c=40cm$

$$Surface area of box$=2[a\times{b}+b\times{c}+c\times{a}]$

$=2[80\times{60}+60\times{40}+40\times{80}]$

$=2[4800+2400+3200]$

$=2\times{10400}$

$=20800 cm^2$.