am nevoie de ajutor si la asta dau 26 de puncte si coroana

AM = AB/2 = 24/2 = 12 cm
DM = √AM² + AD² = √144+576 = √720 = 12√5 cm
A(ADM) = AD×AM/2 = 24×12/2 = 144 cm²
tgDNC = CD/CN = 24/12 = 2