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Mathematics 6 Online
OpenStudy (anonymous):

Polygon ABCD has the following vertices: A(−5, 4), B(1, 4), C(6, −4), and D(−5, −4) Calculate the area of the polygon. 48 units squared 53 units squared 68 units squared 88 units squared

OpenStudy (anonymous):

@sleepyjess

OpenStudy (anonymous):

we know that -5, 4 and 1,4 = 24

OpenStudy (anonymous):

now we need to do that to the last 2 points

OpenStudy (sleepyjess):

Ok, -5, 4 to 1, 4 = 6 we need to find 1, 4 to 6, -4 6, -4 to -5, -4 -5, -4 to 1, 4

OpenStudy (anonymous):

how do we do that? like this?

OpenStudy (anonymous):

@INewton do you know?

OpenStudy (sleepyjess):

using the same formula we used for the first 2 points

OpenStudy (anonymous):

I need to get done bfore 11:30

OpenStudy (anonymous):

Yes, I know. You should draw a picture. Then split it up into a rectangle and a right angled triangle.

OpenStudy (anonymous):

how?

OpenStudy (sleepyjess):

let @INewton help.... I am falling asleep at my computer

OpenStudy (anonymous):

ok bye

OpenStudy (anonymous):

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OpenStudy (anonymous):

ok

OpenStudy (anonymous):

how many units?

OpenStudy (anonymous):

each line?

OpenStudy (anonymous):

What are the rectangle's side lengths? What about the triangle? you know the formula for area of a rectangle and triangle, right?

OpenStudy (anonymous):

multiply the area and add the sum

OpenStudy (anonymous):

Yes... sleepyjess already told you the length of the top side, it's 6. Can you work out the other side lengths?

OpenStudy (anonymous):

ummmm maybe???

OpenStudy (anonymous):

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OpenStudy (anonymous):

thats a big help

OpenStudy (anonymous):

ITS 68!!!!!

OpenStudy (anonymous):

is it?

OpenStudy (anonymous):

Yep :-) Good job

OpenStudy (anonymous):

THANKS DUDE YOUR AWESEOME!!!!

OpenStudy (anonymous):

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