Cuboid box

How many m2 paper is needed for the sticking cuboid box of dimensions 50 cm, 40 cm and 30 cm? To the folds add one-tenth the area.

Correct answer:

x =  1.034 m2

Step-by-step explanation:

q=1+1/10=1011=1.1 a=50 cm m=50:100  m=0.5 m b=40 cm m=40:100  m=0.4 m c=30 cm m=30:100  m=0.3 m  S=2 (a b+b c+c a)=2 (0.5 0.4+0.4 0.3+0.3 0.5)=5047=0.94 m2  x=q S=1.1 0.94=500517 m2=1.034 m2

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