1-2/5=3/5 zatem 3/5 = 1 7/20m
1/5=9/20m
spódnica = 2 * 9/20m = 18/20m = 0,90m = 90cm
cały materiał = 5 * 9/20 = 45/20m = 2,25m
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1-2/5=3/5 zatem 3/5 = 1 7/20m
1/5=9/20m
spódnica = 2 * 9/20m = 18/20m = 0,90m = 90cm
cały materiał = 5 * 9/20 = 45/20m = 2,25m