Find the perimeter of XYZ

Question

mary.rojas · Answer

missing information/picture

anonymous · Answer

attachment

akashdeepdeb · Answer

Use distance formula --> whole root (x2-x1)^2 + (y2-y1)^2
for XY , XZ, YZ!
And then find the perimeter! :)

anonymous · Answer

Choices are 
A. $$\sqrt{377/2 }$$
B. 14.8
C.18.7
D.$$\sqrt{377}$$

akashdeepdeb · Answer

You have all points given! :)
Go ahead and calculate the answer! :)

anonymous · Answer

I happend to get A. I wsnt sure so I wanted to check with someone who knows it better than I do

jim_thompson5910 · Answer

choice A is incorrect

how did you get choice A?

anonymous · Answer

My friend is helping me and We are not good at geo

jim_thompson5910 · Answer

you're using the distance formula right?

anonymous · Answer

Ummm no!

jim_thompson5910 · Answer

are you familiar with it?

anonymous · Answer

No we are not

jim_thompson5910 · Answer

the distance formula is

d = sqrt( (x2 - x1)^2 + (y2 - y1)^2 )

jim_thompson5910 · Answer

look somewhat familiar?

anonymous · Answer

No we never seen such a formula

jim_thompson5910 · Answer

anonymous · Answer

We think we screwed this up. We got 14.8 somehow smeway

jim_thompson5910 · Answer

14.8 is correct, but hopefully you see how you got it

anonymous · Answer

its B

wolf1728 · Answer

Well, I made a graphic and I hope it shows how it is done.
I calculate 14.8218