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Pozostałe boki:
a = ?
1/2 a = ?
a√3 / 2 = 6 cm | * 2
a√3 = 12 cm | : √3
a = 12 cm / √3 = 4√3 cm
1/2 a = 4√3 cm / 2 = 2√3 cm
Obw = 6 cm + 4√3 cm + 2√3 cm = 6 cm + 6√3 cm
Odp. Obwód tego trójkąta wynosi 6 cm + 6√3 cm.