A closed box is cuboid in shape with length = 40 cm,breadth = 30 cm and height = 50 cm. It is made of thin metal sheet. Find the cost of metal sheet required to make 20 such boxes , if 1m² of metal sheet cost Rs 45
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Hi there
First consider each of the six faces.
2 x 30cm x 40cm (top and bottom faces)
= 2400cm^2
2x 30cm x 50cm (Each end)
= 3000cm^2
2x 40cm x 50cm (2 sides)
= 4000cm^2
Total =
2400+3000+4000
9,400cm^2
9,400cm^2 = 0.94m^2
20 boxes =
20 x 0.94 = 18.8m^2
18.8m^2 x 45 rupees
= 846 rupees.
Hope this helps:-)
First consider each of the six faces.
2 x 30cm x 40cm (top and bottom faces)
= 2400cm^2
2x 30cm x 50cm (Each end)
= 3000cm^2
2x 40cm x 50cm (2 sides)
= 4000cm^2
Total =
2400+3000+4000
9,400cm^2
9,400cm^2 = 0.94m^2
20 boxes =
20 x 0.94 = 18.8m^2
18.8m^2 x 45 rupees
= 846 rupees.
Hope this helps:-)
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