A closed box is cuboid in shape with length =40cm , breadth =30cm and height =50cm. It is made up of a thin metal sheet. Find the cost of metal sheet required to make 20 boxes , if 1m^2 of metal sheet costs Rs.45.
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Answered by
17
area of metal sheet = 2(40×30+30×50+50×40)
=2(1200+1500+2000)
=2×4700
=9400cm^2
=9400/10000
=0.94m^2
area of 20 sheets =0.94×20 =18.8m^2
cost= 18.8×45=846 rupees
=2(1200+1500+2000)
=2×4700
=9400cm^2
=9400/10000
=0.94m^2
area of 20 sheets =0.94×20 =18.8m^2
cost= 18.8×45=846 rupees
Answered by
2
2 (lb+bh+hl) ×20×45
2 (40×30+30×50+50×40)
2 (1200+1500+2000)
2 (4700)
9400cm^2 ×20
188000boxes
188000×45
Firstly change into m2
2 (40×30+30×50+50×40)
2 (1200+1500+2000)
2 (4700)
9400cm^2 ×20
188000boxes
188000×45
Firstly change into m2
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