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Pls help me ! Urgent !

Pls Help Me Urgent class=

Răspuns :

∡A = 60°

AB = AD  } => ΔABC - echilateral =>

  • BD = 8 cm (diagonala)

AO - inaltime = AB√3/2 = 8√3/2 = 4√3 cm

AO = AC/2 =>

  • AC = 2AO = 2·4√3 = 8√3 cm (diagonala)

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