Decorative 11881

Mrs. Koláčkova wants to decorate the walls of her room with a strip of wallpaper 5 cm wide. How many meters of this decorative strip will he have to buy if the shorter side of the room measures 3 m and the longer side measures twice as much?

Correct answer:

x =  18 m

Step-by-step explanation:

a=3 m b=2 a=2 3=6 m  x=2 (a+b)=2 (3+6)=18 m

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