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Obw. figury F = 3
Pole figury F' = 25
k = ?
Pole figury F = ?
F' jest podobny do F
k = Obw.F'/Obw.F = 15/3 = 5
k = 5
k² = PoleF'/PoleF
Pole F = PoleF'/k² = 25/(5²) = 25/5 = 1
Pole F = 1