Sienna S.

asked • 08/27/18

Find the perimeter of the triangle with the vertices at (1,−1), (−6,5), and (−4,−3)?

I Need the perimeter of the triangle using the distance formula

1 Expert Answer

By:

Lauren H. answered • 08/27/18

Tutor
4.8 (24)

Experienced High School Chemistry Teacher

Sienna S.

I already know the distance formula. I should have clarified, I just keep getting the wrong answer somehow. 
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08/27/18

Lauren H.

Hmmmm...
√(x2−x1)^2+(y2−y1)^2 = d
 
So, if (1,−1), (−6,5), and (−4,−3)
 
Then √(-6 - 1)^2 + (5 - -1)^2 = √49 + 36 = √85  So, that's one side.
 
Continue with the other two sides and then sum.  You can do it.
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08/27/18

Brionna T.

For all sides I got sqrt of 85, sqrt of 68, and sqrt of 29
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08/27/18

Brionna T.

which all together is 22.8 and I’m still getting the wrong answer
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08/27/18

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