Răspuns:
AD=24 cm
DB=18 cm
BC=50 cm
AB=30 cm.
Explicație pas cu pas:
b) AC=40 cm CD=32 cm
AD=√(AC²-CD²)=√(40²-32²)=√(1600-1024)=√576=24 cm AD=24 cm
AD²=CD·DB ⇒DB=AD²:CD=24²:32=576:32=18 cm DB=18 cm
BC=BD+DC=18+32=50 cm BC=50 cm
AB=√(BC²-AC²)=√(50²-40²)=√(2500-1600)=√900=30 cm AB=30 cm.
