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Ответ:

1 га = 100 а

1 a = 0.01 га

70 а = 70 × 0.01 = 0.7 га

75 а = 75 × 0.01 = 0.75 га

125 а = 125 × 0.01 = 1.25 га

750 а = 750 × 0.01 = 7.5 га

[tex]1g = 10000 \: {m}^{2} \\ 1 {m}^{2} = 0.0001g[/tex]

[tex]200 {m}^{2} = 200 \times 0.0001 = 0.02g \\ \\ {250m}^{2} = 250 \times 0.0001 = 0.025g[/tex]