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Ob = 4a
156m = 4a
a = 39m
39m ÷ 100 = 0,39m = 39cm
2.
130cm ÷ 50 = 2,6cm
Ob = 4a
2,6cm = 4a
a = 0,65cm
3.
12cm ÷ 4 = 3cm
8cm ÷ 4 = 2cm
2. 130:50= 2,6cm
3. 12:4=3
8:4=2
Ob=156 m
Ob=4a
4a=156/:4
a=39 m
1cm-100cm
39:100= 0,39 m = 39 cm - długość boku kwadratu w skali 1:100
2.
130 : 50= 2,6 cm - długość boku kwadratu w skali 1:50
3.
12:4=3 cm - jeden bok
8:4=2 cm - drugi bok