# Metal box

How much metal we need for the production of box with dimensions 5 dm, 30 cm and a height of 1 m?
Add 12% of the waste and folds.

Correct result:

x =  2.576 m2

#### Solution:

$x=1.12 \cdot \ 2 \cdot \ (0.5 \cdot \ 0.3+0.5 \cdot \ 1+1 \cdot \ 0.5)=\dfrac{ 322 }{ 125 }=2.576 \ \text{m}^2$

Our examples were largely sent or created by pupils and students themselves. Therefore, we would be pleased if you could send us any errors you found, spelling mistakes, or rephasing the example. Thank you!

Leave us a comment of this math problem and its solution (i.e. if it is still somewhat unclear...):

Be the first to comment!

Tips to related online calculators
Do you want to convert area units?

## Next similar math problems:

• Aquarium II
Calculate how much glass we need to build an aquarium with a rectangular shape with base 70 cm × 70 cm and a height of 70 cm, if the waste is 2%. Aquarium haven't top glass.
• Iron
Iron ore contains 57% iron. How much ore is needed to produce 20 tons of iron?
• School library
The school library contains 6300 books. With this constitutes 7% of professional books for teachers 18% interest books and encyclopedias for pupils and the rest of the fairy tales. How much are which books?
• Cardboard
How many m2 of cardboard are needed to make the cuboid with dimensions 40 cm 60 cm and 20 cm?
• Cage
How many m2 of mesh farmer use for fencing of a cuboid cage with dimensions 25m, 18m, and 2.5m?
• Recipe
A recipe requires 2 pounds of flour. If a chef wants to triple the recipe, how many ounces of flour will be needed?
• Seeds 2
How many seeds germinated from 1000 pcs, when 23% no emergence?
• Class
In 7.C clss are 10 girls and 20 boys. Yesterday was missing 20% of girls and 50% boys. What percentage of students missing?
• Sales off
Calculate what was the original price of the good, if the price after discount 25% and the subsequent rise of 20% is 400 USD.
• VAT lottery
Father earns 993 euro a month, mother 918 euro per month. Calculate what amount they paid as value added tax (VAT) to the government if the VAT rate is 20%. Assume that the family will spend their entire monthly income.
• Farmland
Farmers seeded maize to 45 ha, which is 15% of their total farmland. How many hectares of fields they have?
• Rape
The agricultural cooperative harvested 525 ares of rape, of which received 5.6 tons of rape seeds. Calculate the yield per hectare of rape.
• Area
Calculate: ?
• Colza
In the agricultural cooperative harvested 525 ares of colza, of which received 5.6 tons of seeds. Calculate the yield per hectare.
• One hectare
How many square meters are one hectare?
• A swiming
A swiming pool holds 30000lt of water. How many gallons does it hold? 1 gallon= 4.55lt
• Customary length
Convert length 65yd 2 ft to ft