Help! A parallelogram question? (1 Viewer)

[bubb]

If ABCD is a paralelogram with A(2,1,4), B(1,4,3) and C(1,0,2):

Show that the area of the parallelogram is 8.12 sq units?

and the coordinated of S is (0,1,3)??

 

[Drsoccerball]

If ABCD is a paralelogram with A(2,1,4), B(1,4,3) and C(1,0,2):

Show that the area of the parallelogram is 8.12 sq units?

and the coordinated of S is (0,1,3)??

matricies ?

 

[Drongoski]

What is S?

 

[Drongoski]

area of //gram ABCD = |cross-product of vectors BC and BA|

vector BC = column vector = [1-1, 0-4, 2-3] = [0, -4, -1]

vector BA = column vector = [2-1, 1-4, 4-3] = [1, -3, 1]

Take cross product of these 2 vectors using determinants = square root of (66) = 8.1240 ...



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What uni course is this from?