Question

find the area of a triangle whose vertices are A(3,5),B(2,-1) and C(-5,6)​

Answer 1

1/2(3 2 _5 3

5 _1 6 5)

1/2(_3+12_25)-(10+5+18)

1/2(-28+12)-(33)

1/2(-16-33)

1/2(-49)

22.5cm

i think it may be the answer

if it is wrong, plz forgive me