How many m2 of leatherette was used to produce five mats with dimensions of 2 m, 1 m and 8 cm?

Correct answer:

x =  22.4 m2

Step-by-step explanation:

n=5 a=2 m b=1 m c=8 cm m=8:100  m=0.08 m  S1=2 (a b+b c+c a)=2 (2 1+1 0.08+0.08 2)=25112=4.48 m2  x=n S1=5 4.48=22.4 m2

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