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


x=1.12 2 (0.5 0.3+0.5 1+1 0.5)=322125 m2=2.576 m2

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