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56+2=58m
Obwod O=2a+2b
58=2·17+2b
58=34+2b
58-34=2b
24=2b /;2
b=12m --->szerokosc dzialki
Pole dzialki prostokatnej wynosi:
P=a·b=17m·12m=204m²=2,04 a ≈2 ary -->.odpowiedz