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4*3/4=3m - obwód
2. 3 1/2*1 3/5 = 5,6 m - pole
2*3,5+2*1,6= 9,2m - obwód
3. 2 2/5*1 1/4= 3m - pole
2* 2 2/5 + 2*1 1/4= 7,3m - obwód