A closed box is a 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 sheets required to make 20 such boxes, if 1 m² of metal sheet costs ₹ 45.
Surface Area, Volume, Capacity
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Question

A closed box is a 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 sheets required to make 20 such boxes, if 1 m² of metal sheet costs ₹ 45.

Surface Area, Volume, Capacity

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KnowledgeBoat · Accepted Answer

Given: The length of the closed box = 40 cm = 0.4 m. The breadth of the closed box = 30 cm = 0.3 m. The height of the closed box = 50 cm = 0.5 m. As we know, the total surface area of the cuboid = 2(l x b \+ b x h \+ h x l) = 2(0.4 x 0.3 \+ 0.3 x 0.5 \+ 0.5 x 0.4) m² = 2(0.12 \+ 0.15 \+ 0.2) m² = 2 x 0.47 m² = 0.94 m² Total surface area of 20 boxes = Surface area of 1 box 20 = 0.94 x 20 m² = 18.8 m² Cost of 1 m² sheet = ₹ 45 Total cost = Total surface area x Cost of 1 m² sheet = ₹ 18.8 x 45 = ₹ 846 Hence, the total cost of the sheet is ₹ 846.

Mathematics

A closed box is a 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 sheets required to make 20 such boxes, if 1 m² of metal sheet costs ₹ 45.

Surface Area, Volume, Capacity

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Mathematics

A closed box is a 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 sheets required to make 20 such boxes, if 1 m2 of metal sheet costs ₹ 45.

Surface Area, Volume, Capacity

Related Questions

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A closed box is a 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 sheets required to make 20 such boxes, if 1 m² of metal sheet costs ₹ 45.

Four cubes, each of edge 9 cm, are joined as shown below :
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