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2*4,4*2,2=19,36 m2
14,52+19,36=33,88 m2 = 3388cm2
55*10=550cm2
3388:550=6,16
odp na wytapetowanie pokoju potrzebne jest 7 rolek tapety
3,3*2,2=7,26
Pb= 2*9,68+2*7,26
Pb=19,36+14,52
Pb=33,88 (m^2)
55cm=0,55m
33,88/0,55=61,6
61,6/10 = 6,16 ~7
Odp. Pan Mariusz powinien kupić 7 rolek tapety