naydite ploshad' treugolnika (sm. ris. 66), vershini otorogo imeyut koordinati (0;0),...

Question

naydite ploshad' treugolnika (sm. ris. 66), vershini otorogo imeyut koordinati (0;0), (5;6), (9;4).

Answer 1

5*6=30

9*4=36

30+36=66