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anonymous
 one year ago
Hello! I am getting the wrong answer but I can't see where I am going wrong, please help.
6. You are given the coordinates 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
 one year ago
Hello! I am getting the wrong answer but I can't see where I am going wrong, please help. 6. You are given the coordinates 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.

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I will post some pictures of the graph and my working out now too...

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.2dw:1441637453103:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yes, thats the graph!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0And here's my working out.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I drew my graph to scale so when I measure it I can see the answer is 40, not 20, but I cants see why.

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.2I see why, you have picked wrong coordinates you should be taking the coordinates of B, not A

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.2dw:1441638171968:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Oh my word. Thank you! Sorry for taking up your time :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I make silly mistakes like that often. Oh well, nothing for it but practice I guess.

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.2its good to see that you have taken time to graph and compare the areas if you're familiar with vectors/matrices, there is a really nice way to find the area

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I don't think I am. At least, I had to google what that is :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I think it comes up later in my syllabus.
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