Hello! I am getting the wrong answer but I can't see where I am going wrong, please help.

6. You are given the co-ordinates of the four points A(6,2), B(2,4), C(-6,-2) and D(-2,-4).
(v) Calculate the area of the figure ABCD.
IN the previous questions you find that DA's length is 10 which I use as the 'b' as in base (A=bh) . You also know that a line perpendicular to DA passing through B passes through DA at (4.4,0.8) . I tried using point A and (4.4,0.8) to find the height by finding the length between the two points. I get 2 instead of 4.

Question

Hello!  I am getting the wrong answer but I can't see where I am going wrong, please help.

6. You are given the co-ordinates of the four points A(6,2), B(2,4), C(-6,-2) and D(-2,-4).
(v) Calculate the area of the figure ABCD.
IN the previous questions you find that DA's length is 10 which I use as the 'b' as in base (A=bh) . You also know that a line perpendicular to DA passing through B passes through DA at (4.4,0.8) . I tried using point A and (4.4,0.8) to find the height by finding the length between the two points. I get 2 instead of 4.

anonymous · Answer

I will post some pictures of the graph and my working out now too...

ganeshie8 · Answer

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