Dau coroana.Va rog e foarte important!
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Răspuns:
Explicație pas cu pas:
a)P=4l
P=4×30mm=120mm=0,12m
P=4×15cm=60cm=0,6m
P=4×2,5 dm==10dm=1m
P=4×70,4 m=281,6m
P=4×0,02 km=4×20m=80m
b)l=P:4
l=100 000mm/4=100m/4=25m
l=300dm/4=30m/4=7,5m
l=0,24km/4=240m/4=60m
Răspuns:
a)
P=4×30mm=120mm=12cm=0,12m;
P=4×15cm=60cm=0,6m;
P=4×2,5dm=10dm=1m;
P=4×70,4m=281,6m;
P=4×0,02km=4×20m=80m;
b)
formula P=4l
l=P÷4
l=100000mm÷4=100m÷4=25m;
l=300dm÷4=30m÷4=7,5m
l=0,24km÷4=240m÷4=60m.