Metal sheet

The box has the shape of a cube with an edge length of 50 cm. How much m2 of sheet metal is needed to beat a box if we add 20% on the folds of the lid and walls?

Correct answer:

x =  1.8 m2

Step-by-step explanation:

q=100%+20%=1+10020=1.2 a=50 cm m=50:100  m=0.5 m S=6 a2=6 0.52=23=1.5 m2  x=q S=1.2 1.5=1.8 m2

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