Question

If the box has length, breadth and height as 80cm, 40cm and 20cm respectively. How many square

sheets of paper of side 40cm would be required to frame box?​

Answer 1

Answer:

7

Step-by-step explanation:

Length =80 cm, Breadth = 40 cm, Height = 20 cm. So, she would require 7 sheets.

Answer 2

According to the question :-

Length = 80cm

Breadth = 40cm

Height = 20cm

Surface area of box :-

= 2 ( L × B + B × H + H × L )

= 2 ( 80 × 40 + 40 × 20 + 20 × 80 )

= 2 ( 3200 + 800 + 1600)

= 2 ( 5600 )

= 11200 sq. cm

Hence,

Side = 40 cm

Area of square :-

= Side × Side

= 40 × 40

= 1600

Area of 1 square

= 1600 sq. cm

Situation :-

$\frac{surface \: area \: of \: box}{area \: of \: 1 \: square} \\ \\ = \frac{11200}{1600} \\ \\ = 7 \:$

Hence,

Seven square sheet is needed..