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2a-dlugosc II boku
24cm-obwod
2*a+2*2a=24
2a+4a=24
6a=24 /:6
a=4[cm]-dlugosc I boku
2a=2*4cm=8cm-dlugosc II boku
Dlugosci bokow to 4cm i 8cm ;))
8x2=16cm
16cm+8cm=24cm ;)
20cm:4=5cm
5cm+2cm=7cm -tyle ma jeden bok
1 bok-7cm
2 bok-5cm
3 bok-7cm
4 bok-5cm
Spr.5cm+7cm+5cm+7cm=24cm