Question

how many square seets of paper of side 40 cm would be required to covered a cuboidal box of dimensions 80 cm × 40 cm × 20 cm​

Answer 1

Answer:

Step-by-step explanation:

Given dimensions of wooden block =80 cm×40 cm×20 cm

Then surface Area of the box =2[ℓb+bh+ℓh]

                                                 =2[80×40+40×20+80×20]

                                                 =11200 cm  

2

 

The number of sheets required =  

Area of one sheet of box per

Surface area of the box

​  

 

                                                =  

20  

2

 

11200

​  

 

                                                =28