I'm so embarassed, but I really don't see where you're going with this.
Here's what I wanted to do. Let be the parallelogram in question, . Surface area of that parallelogram is , where denotes the height. That equals to which is .
So I was hoping I could express using and then calculate it using the above equation.
Does that make any sense?
In your first post.....
So I did not know you have to find the area of the paralleogram.........I told you the method of finding the plane (surface) which the parallelogram lies. Anyway if you want to find the area of the parallelogram you will have to find the sides of the parallelogram (as vectors). See the attached figure.I have to determine the surface of a parallelogram.............
Solving the above equations you can obtain the vectors of the sides of the parallelogram. Then would give you the area.
Sorry if I confused you in my previous posts..........I hope this helps to clarify things.....just forget what I told before.