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Robert Waddell · Answer 1 · 2022-03-28T20:22:04+0000

Answer:

LK = 38

Explanation:

MN is the midsegment, and the midsegment is the average length of the top and bottom, so:

(18 + LK)/(2) =28

solve for LK:

$18+LK=56\\\\LK=38$