a)zamień na centymetry kwadratowe:3dm2,9,8dm2,4m2,5,2 2 b)zamień na metry kwadratowe:1500cm2,340dm2,6a,23ha c)hektary:200a,63a,350000m2,4500m2 Jak coś to: dm-decymetry m-metry cm-centymetry  a-ary ha-hektary PROSZE POTRZEBNE NA JUTRO

a)zamień na centymetry kwadratowe: 3dm2=3(10x10)=3x100=300cm² 9,8dm2=9,8x100=980cm², 4m2=4x(100x100)=4x10000=40000cm² 5,2 2-? b)zamień na metry kwadratowe: 1500cm2=1500:10000=0,15m² ,340dm2=340:100=3,4m² 3,6a=3,6x100=360m² 23ha=23x100x100=230000m² c)hektary: 200a=200:100=2ha ,63a=63:100=0,63ha ,350000m2=350000:10000=3,5ha ,4500m2=4500:10000=0,45ha