http://iv.pl/images/69840200524364089501.jpg

zad 5 prostokąt I b=70m obw=120+140=260m prostokąt II a=219m p=219m² prostokąt III a=8,5 km obw=17+2=19km zad 6 p=20x20=400m² a) 1/5*400=80m² b)1/8*400=50m²