Răspuns:
Explicație pas cu pas:
AD ⊥ BC
BD = 9 cm ; DC = 16 cm ; AB; AC = ?
BC = BD+DC = 9+16 = 25 cm
AB² = BD·BC = 9·25 = > AB = √(9·25) = 3·5 => AB = 15 cm
AC² = CD·BC = 16·25 => AC = √(16·25) = 4·5 => AC = 20 cm
DC = 5 cm ; BC = 15 cm ; AB; AC = ?
BD = BC-DC = 15-5 = 10 cm
AB²= BD·BC = 10·15 = 150 => AB = √150 = 5√6 cm
AC² = CD·BC = 5·15 = 75 => AC = √75 = 5√3 cm
#copaceibrainly
