The ditch

Ditch with a cross-section of an isosceles trapezoid with bases 2m and 6m are deep 1.5m. How long is the slope of the ditch?

Correct result:

s =  2.5 m

Solution:

a=6 m c=2 m h=1.5 m  x=ac2=622=2 m  s2=h2+x2  s=h2+x2=1.52+22=52=52 m=2.5 m



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