Question

Daca A,B,C sunt puncte coliniare in aceasta ordine,AC=12cm si AB/BC=1/3,calculati AB si BC.

Answer 1

AC=12 <=> AB+BC=12
AB/BC=1/3 => 3AB=BC
AB+3AB=12
4AB=12
AB=3 cm
BC=3•3=9 cm