Find vector orthogonal to plane through these points P, Q and R.

P(1, 0, 0)

Q(0, 2, 0)

R(0,0,3)

then find the area of the triangle PQR.

i tried using cross product of:

|1 0 0|

|0 2 0|

|0 0 3|

i got 1*(6-0) - 0(0-0) + 0(0-0)

...thats not correct because it should be <6, 3, 2>

i'm not sure i set this up correctly, haven't really tried a cross product with three points, usually just two.

then need the area of triangle.

thanks for any help here.