Question 398949
if you don't know the base or the height, then you need to know one of the acute angles of the parallelogram plus the length of each of the sides.


see the attached picture.


<img src = "http://theo.x10hosting.com/problems/398949.jpg" alt = "**** picture not found *****" />


follow the logic in the picture.


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The angle is important since it impacts the height and the length of the base of the parallelogram.