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P2=(5i1/3+2i1/2)*(4i1/4+1i1/2)=
=(32/6+15/6)*(18/4+6/4)= 47/6*24/4= 188/4= 47
47-22i2/3= 24i1/3 cm²
Pole prostokąta zwiększy się o 24i 1/3 cm²