In a trapezium, the lengths of two parallel sides are in the ratio 2:3 and its height is 16 cm. If the area of the trapezium is 440 sq cm, then find the length of the line segment joining the midpoints of the two non-parallel sides.
27.5 cm
Let parallel sides be 2k and 3k. Area = (1/2)(2k+3k)(16) = 440, so 40k = 440, k=11, giving sides 22 and 33. The midsegment (joining midpoints of non-parallel sides) = (22+33)/2 = 27.5 cm.
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