Question 28

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?

Solution

length = 80 cm

breadth = 60 cm

height = 40 cm

Now,

Total Surface Area = 2(lb + bh + lh)

= 2 ( 80 × 60 + 60 × 40 + 40 × 80)

= 2( 4800 + 2400 + 3200)

= 2 × 10400

$$= 20800 cm^2$$

B is correct choice.

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