Dimensions 7079

Zofia decided to wallpaper one wall of her room. How long does he have to go to school if the wall dimensions are 3m and 2.4m?

Correct answer:

n =  115 r

Step-by-step explanation:

a=3 m b=2.4 m S1=a b=3 2.4=536=7.2 m2  c=210 mm m=210:1000  m=0.21 m d=297 mm m=297:1000  m=0.297 m S2=c d=0.21 0.2970.0624 m2  n=S1/S2=7.2/0.0624=115 r

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