Embankment

Perpendicular cross-section of the embankment around the lake has the shape of an isosceles trapezoid. Calculate the perpendicular cross-section, where bank is 4 m high the upper width is 7 m and the legs are 10 m long.

Correct result:

S =  64.6606 m2

Solution:

h=4 m c=7 m r=10 m x=r2h2=10242=2 21 m9.1652 m a=c+2 x=7+2 9.165225.3303 m S=(a+c) h/2=(25.3303+7) 4/2=64.6606 m2



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