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Ob = 2a + 2b
a = b + 6
2 * (b + 6) + 2b = 52
2b + 12 + 2b = 52
4b = 40 /: 4
b = 10
a = 10 + 6
a = 16
Długości boków to 10 i 16.
10 * 2 + 16 * 2 = 52
20 + 32 = 52
52 = 52
6x
52-obwód
O=52:2=26
26+6=32
32:2=16
x+6- drugi bok 10cm+6cm=16cm
x+x+x+6+x+6=52cm
4x+12=52cm
4x=52cm-12
4x=40cm/4
x=10
OBW= 10cm+10cm+16cm+16cm=52cm