Question

a cuboid a cuboidal tin box open at the top has dimension 27 X 16 X 14 cm find the total area of metal sheet required to make such box also find the cost of metal sheet at the rate of rupees 15 per cm²
pls tell
pls attach a paper on which it is solved
pls note I need metal sheet required to mke one box only
and cost of those metal sheets​
the one who will tell answer properly I'll mark him/her brainlist
question is of 4 marks​

Answer 1

Answer:

Step-by-step explanation:

As we know that,

Surface area of cuboid =2(lb+bh+hl)

Therefore,

Surface area of 1 tin box

=2(30×40+40×50+50×30)

=2×(1200+2000+1500)

=9400cm  

2

 

Surface area of 20 tin box =20×9400=188000cm  

2

=18.8m  

2

 

Given that the cost of the tin sheet is R.20 per square meter.

Therefore,

Cost of tin required for 20 tin boxes =20×18.8=Rs.376