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1 figura P = 1 * 2 : 2 + (2 + 4) * 2 : 2 = 1 + 6 = 7 cm² 2 figura P = (10 + 6) * 8 : 2 + (15 + 6) * 8 : 2 = 64 + 84 = 148 m² 3 figura P = (5 * 6) - (1 + 4) * 2 : 2 = 30 - 5 = 15 cm² 4 figura P = (3 + 2) * 1 : 2 + (1 * 3) = 2,5 + 3 = 5,5 dm²

1. 1cm*2cm*1/2= 1cm2      2cm*2cm=4cm2       2cm*2cm*1/2=2 cm2    1cm2+ 4cm2+2cm2=7cm2 2. 8m*6m= 64m2     4m*8m*1/2= 16m2       6m*8m=64m2  9m*8m*1/2=36m2     36m2+64m2+16m2=116m2 3. 6cm*3cm=18cm2      2cm*1cm=2cm2      1/2cm*1/2cm*2cm=1/2 cm2        18cm2+(2*2cm2)+(2*1/2cm2) =23cm2 4. 1dm*2dm=2dm2        1dm*1dm*1/2dm=1/2dm2  3dm*1dm=3dm2    2dm2+1/2dm2+3dm2=5 1/2dm2