skala --> 1 : 3 0001cm - 3 000cm1cm - 30m-----------------------------------------1cm² = 30m × 30m = 900cm²1 cm² ---- 900 cm²7 cm² ---- xcm²x = 7cm² × 900cm² / 1cm²x = 6 300cm² --> 6 300cm² × 0,0001 m² = 0,63m²Odp: Rzeczywista powierzchnia tego jeziora to 0,63m².
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skala --> 1 : 3 000
1cm - 3 000cm
1cm - 30m
-----------------------------------------
1cm² = 30m × 30m = 900cm²
1 cm² ---- 900 cm²
7 cm² ---- xcm²
x = 7cm² × 900cm² / 1cm²
x = 6 300cm² --> 6 300cm² × 0,0001 m² = 0,63m²
Odp: Rzeczywista powierzchnia tego jeziora to 0,63m².