Metal box

How much metal do we need to produce in a box with dimensions of 5 dm, 30 cm, and a height of 1 m?
Add 12% of the waste and fold.

Final Answer:

x =  2.128 m2

Step-by-step explanation:

a=5 dm→ m=5:10  m=0.5 m b=30 cm→ m=30:100  m=0.3 m c=1 m q=100%+12%=1+10012​=1.12  S=2⋅ (a⋅ b+b⋅ c+c⋅ a)=2⋅ (0.5⋅ 0.3+0.3⋅ 1+1⋅ 0.5)=1019​=1.9 m2  x=q⋅ S=1.12⋅ 1.9=2.128 m2

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