Metal rails

Dad needs to improve the edges of the wooden boxes, which are to be reinforced with metal rails. How many cm of rails will he need if the box has the shape of a prism and the length of the edges is 70cm, 70cm, and 120cm?

Correct answer:

x =  1040 cm

Step-by-step explanation:

a=70 cm b=70 cm c=120 cm  o=2 (a+b)=2 (70+70)=280 cm  x=2 o+4 c=2 280+4 120=1040=1040 cm x1=4 (a+b+c)=4 (70+70+120)=1040 cm x1=x



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