Question

in triunghiul abc,ab=16,ac=12,d mijlocul laturii bc,distanta de la d la ac=8.aflati aria abc

Answer 1

$Stim~ca~mediana~imparte~triunghiul~in~doua~suprafete~de~arii \\ egale~(echivalente). \\ \\ Deci~A_{ADC}= \frac{d(D,AC) \cdot AC}{2}= \frac{8 \cdot 12}{2}=48~(cm)^2. \\ \\ A_{ABC}=2 \cdot A_{ADC}=2 \cdot 48 =96 ~(cm)^2.$