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
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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
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