Traditional Culture Encyclopedia - Traditional customs - Traditional reservoir dam slope area
Traditional reservoir dam slope area
Looking at this picture, we can see that the quadrilateral CDEF is a rectangle.
Then CD=EF=5m, DE=CF=20m, then the slope of slope AD is 1: 2.5.
AE=2.5×DE=50m，BF = 2cf = 40m。
Then ad = AE+ef+FD = 95 (m).
Therefore, the length of AB is 95m. ..
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