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16-8=8
8:4=2
2+4=6 - 1 bok
2 - drugi bok
P=a*b
P=2*6=12
Odp. Pole wynosi 12 cm2
a-4-2bok
Obw=16cm
16=2*a+2(a-4)
16=2a+2a-8
24=4a
a=6cm
a=6cm-1bok
a-4=6-4=2-2bok
P=6*2
P=12cm²
x+4-bok b
2(x+4)+2x=16
2x+8+2x=16
4x=16-8
4x=8
x=2
2-bok a
2+4-bok b
Pole= 2 x 6
Pole=12
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