What is the area of a parallelogram containing two 60 degree angles and parallel sides that measure 20 ft and 14 ft?
If the base side is 20, and the slanting sides are 14, and the lower-left angle is 60°,
the altitude is 7√3 and the area is thus 140√3
If the sides are arranged the other way, then the base is 14 and the altitude is 10√3 and the area is still 140√3