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36+144=c²
c= √180
Obw= 6+12+√180= 18+ √180
6^+12^=c^
c=6^+12^POD PIERWIASTKIEM
i obwód liczysz dodając kazda długos boku
6²+12²=c²
36+144=c²
c= √180
c=3√20
Obw=6+12+3√20=18+3√20