The diagram shows a section of a bridge between the points A and K. The length of line segment AK is 640 meters. ∆ABC, ∆CDF, and ∆FJK are similar, and 2AC = CF = 2FK. The first pillar, BG, is 20 meters tall.

The area of ∆CDF is ___square meters.

Question

The diagram shows a section of a bridge between the points A and K. The length of line segment AK  is 640 meters. ∆ABC, ∆CDF, and ∆FJK are similar, and 2AC = CF = 2FK. The first pillar, BG, is 20 meters tall.

The area of ∆CDF is ___square meters.

mrb.x · Answer

http://assets.openstudy.com/updates/attachments/56c21bdce4b059857047417b-haleyshabba-1455561734914-1ede0da051bd4a47b13ca7013501ae97.jpg

mrb.x · Answer

@KendrickLamar2014

anonymous · Answer

in order to find the area you need values of "CF" and "DH"... from 2AC = CF = 2FK and the fact that AK = AC+CF+FK ... we should be able to get CF...

Also, as the triangles are similar that should help in getting DH given BG is  20m... 
Does that help ??

mrb.x · Answer

Not at all. I'm really bad at this stuff, I'm making a 68 in math models and I can't pass this application to finish. I've failed this I dont know how many times.

anonymous · Answer

lets take it step by step:

from 2AC = CF = 2FK and the fact that AK = AC+CF+FK ... we should be able to get CF...

Can you explain what you understood from this ?

mrb.x · Answer

I dont understand how to do this since we dont have the measurements.

anonymous · Answer

do you agree that AK = AC+CF+FK ???