Locate the Centriod of a Line Problem

[smashbrohamme]

I am trying to locate the centriod of a line and I am not getting to the end.

The answer the book gives is Xbar= 5.74 and Ybar= 1.28

I am getting confused on where they are trying to call out the dimensions from what datum.

Total line length is 18.

L5 = ybar= 2.5 xbar= 0
L8= Ybar= 0 xbar= 4
L5radius = Ybar= 3.183 Xbar= 8 (would this be right technically?)

I am using my datum from the bottom left corner but I also tried to use bottom right corner and still I am not coming up with the correct answer...I am adding total xbar and dividing TL/Xbar vice verse for Ybar but I can't seem to come up with the answers.
I used the formula 2r/Pie to get my ybar for the radius line.

 

[tiny-tim]

hi smashbrohamme!

(have a pi: π )

I used the formula 2r/Pie to get my ybar for the radius line.

don't you need it for both y and x ?

 

[smashbrohamme]

im still not coming up with the correct answer...I am multiplying the 5radius to Pi, to get the actual line length for the radius5...but I am doing something wrong here. and I have been trying everything

 

[tiny-tim]

hi smashbrohamme!

(what happened to that π i gave you? )

… I am multiplying the 5radius to Pi, to get the actual line length for the radius5

no, π/2

 

[smashbrohamme]

what does n mean?

 

[tiny-tim]

what does n mean?

it's not n it's π (pi)

(copy it and use it!)