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

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