Question

find the area of triangle whose vertices are (2 7) (3 -1) (-5 6)​

Answer 1

Answer:

1

Step-by-step explanation:

(1/2) [x1 (y2 – y3 ) + x2 (y3 – y1 ) + x3(y1 – y2)]

(1/2)[2(-1-6)+3(6-7)(-5)(7+1)]

(1/2)[(-14)+(-3)(-40)]

(1/2)(57)

=-28.5

area cant be negative hence

28.5u² or 28.5 sq units