DLUGOSC PROSTOKATA JEST ROWNA OBWODOWI KWADRATU O BOKU 2 CM,A POLE TEGO PROSTOKATA WYNOSI 56 CM2,OBLICZ OBWOD PROSTOKATA.
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2*4=8
56/8=7
8*2+7*2=16+14=30cm
2*4=8
56:8=7
2*7+2*8=14+16=30