Parallelogram Question... HELP!

[goodnosh7]

The parallelogram ABCD has vertices A(3,2,0), B(7,-1,-1), C(10,-3,0), and D(6,0,1). Calculate the area of the parallelogram.

 

[stapel]

What formulas have they given you for finding the area of parallelograms?

Thank you!

Eliz.

 

[skeeter]

http://www.jtaylor1142001.net/calcjat/Solutions/VCrossProduct/VCPAParallelogram.htm