oblicz pole prostokąta o wymiarach a)2m x 7dm b)3cm x 8km c)5dm x 4mm d)6km x 30dm e)1dm x 160cm f)2m x 10mm

a) 20dm×7dm=140dm² b) 3cm× 800000cm = 2400000cm²= 240m² c) 50cm×0,4cm= 20cm² d) 6000m× 0,3m = 18000m² e) 1dm × 1,6dm = 1,6dm² f) 200cm × 0.1cm = 20cm²

a) a)2m x 7dm 7dm = 0,7m P = 0,7*2 P = 1,4m2 b)3cm x 8km 8km = 8000m = 800000cm P = 3*800000 P = 2 400 000cm2 c)5dm x 4mm 5dm = 50cm = 500mm P = 500*4 P = 2000mm2 d)6km x 30dm 6km = 6000m = 60000dm P = 30*60000 P = 1800000dm2 e)1dm x 160cm 1dm = 10cm P = 10*160 P = 1600cm2 f)2m x 10mm 2m = 200cm=2000mm P = 2000 * 10 P = 20000mm2