Odpowiedź :
Odpowiedź:
[tex]31 {cm}^{2} = 3100 {mm}^{2} \\ 25 {dm}^{2} = 250000 {mm}^{2} \\ 50 {dm}^{2} = 5000 {cm }^{2} \\ 19000 {mm}^{2} = 190 {cm}^{2} \\ 2300 {cm}^{2} = 23 {dm}^{2} \\ 20000 {m}^{2} = 2000000{dm}^{2} \\ 4300 {mm}^{2} = 43 {cm}^{2} \\ [/tex]