zad1. a) P=[latex] frac{a*h}{2} [/latex] P=8*7/2= 54/2= 27cm[latex] ^{2} [/latex] b) P=5*9/2= 45/2= 22,5cm[latex]^{2} [/latex] zad 2. I. [latex] frac{8cm*15cm}{2} [/latex]= 60cm => do tabeli wpisujesz 60cm² II. [latex] 10dm^{2} [/latex]= 100[latex] cm^{2} [/latex] P=100cm² 100cm²=40cm*? 100cm²=40cm* 2,5cm do tabeli wpisujesz 2,5cm III. 60cm * ? = 18dm²(1800cm²) 60cm*?=1800cm² 60cm*30cm=1800cm² do tabeli wpisujesz 30cm zad.4 a) (1cm*3cm)+(4cm*1cm)= 3cm+4cm=7cm Ma pole 7cm² b) (2cm*6cm)+(9cm*2cm)= 12cm+18cm= 30cm Ma pole 30cm² Licze na naj:)
