Răspuns:
AB = 8 cm
Explicație pas cu pas:
Δ MNP ≈ Δ ABC
Aria MNP / Aria ABC = 9/16
MN = 6 cm ; AB = ?
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Aria MNP = MN · h₁ :2
Aria ABC = AB · h₂ : 2 =>
MN·h₁ / AB·h₂ = 9/16 =>
MN / AB = 3/4 =>
AB = 4·MN /3 =>
AB = 4·6/3 = 24/3 =>
AB = 8 cm
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