Mathematics, 07.12.2020 18:00 Christyy9608
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The diagram shows a section of a bridge between the points A and K. The length of line segment is 640 meters. ∆ABC, ∆CDF, and ∆FJK are similar, and 2AC = CF = 2FK. The first pillar, , is 20 meters tall.
The area of ∆CDF is
square meters.
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