Carpet

How many crowns CZK do we pay for a carpet for a bedroom, when 1m of square carpet costs 350 CZK and the bedroom has dimensions of 4m and 6m? How many crowns do we pay for a strip around the carpet, when 1m of the strip costs 15 CZK?

Result

x =  8400 kc
y =  300 Kc

Solution:

c=350 Kc/m2 a=4 m b=6 m S=a b=4 6=24 m2  x=c S=350 24=8400 kcc=350 \ \text{Kc/m}^2 \ \\ a=4 \ \text{m} \ \\ b=6 \ \text{m} \ \\ S=a \cdot \ b=4 \cdot \ 6=24 \ \text{m}^2 \ \\ \ \\ x=c \cdot \ S=350 \cdot \ 24=8400 \ \text{kc}
l=15 Kc/m o=2 (a+b)=2 (4+6)=20 m  y=l o=15 20=300 Kcl=15 \ \text{Kc/m} \ \\ o=2 \cdot \ (a+b)=2 \cdot \ (4+6)=20 \ \text{m} \ \\ \ \\ y=l \cdot \ o=15 \cdot \ 20=300 \ \text{Kc}



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