Răspuns:
BD=24cm; AC=6radical(5); AB=12radical(5)
Explicație pas cu pas:
Desenul, cred, il faci singur. Folosim teorema inaltimii: AD^2=CD*BD, de unde avem 12^2=6*BD, DE UNDE BD=144:6=24
aCUM FOLOSIM TEOREMA CATETEI: AC^2=CD*CB, Deorece CD+DB=AB=6+24=30, obtinem: AC^2=6*30, DE UNDE AC=radical(6*30)=radical(6*6*5)=6*radical(5)
Analog aflam cateta AB: AB^2=BD*BC=24*30, de unde AB=radical(24*30)=radical(6*4*6*5)=6*2*radical(5)=12*radical(5)