[tex]\: aria \: patrtului \: = \: l \: \times l \: \\ \\ a) \: 0.3 \: \times \: 0.3 \: = \: 0.9 \: {km}^{2} \\ b) \: 120 \: \times \: 120 \: = 14400 {mm}^{2} \\ c) \: 0.01 \: \times 0.01 \: = 0.0001 {hm}^{2} \\ d) \: 7.5 \: \times \: 7.5 \: = 56.25 {cm}^{2} \\ e) \: 4.5 \times 4.5 \: = 20.25 {dm}^{2} \\ \\ sper \: ca \: te - am \: ajutat[/tex]
