Question

If the vertices of a triangle are(1,1),(5,-2) and (3,4) Then its area is

Answer 1

Answer:

9 sq.cm

Step-by-step explanation:

1/2(X1(y2-y3)+X2(y3-y1)+X3(y1-y2))

1/2(1(-2-4)+5(4-1)+3(1+2))

1/2(-6+15+9)

1/2(18)

9