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4. a) P
b) F
5. D
7. 1cm - 100m => 10000cm
2,5cm = 25000cm => 2500m
8. a) 12m = 1200cm
16m = 1600cm
20m = 2000cm
1200cm : 400cm = 3cm
1600cm : 400cm = 4cm
2000cm : 400cm = 5cm
Musisz narysować trójkąt o bokach 3cm, 4cm, 5cm
b) 12m + 16m + 20m = 48m
Odp Pani Leokaldia potrzebuje 48m siatki.
c) P=
P=
P= 12*8
P= 96
9. P=
P=
P=
P= 36