Answer:
18 units
Step-by-step explanation:
The Quadrilateral is a parallelogram.
Since Sides K L and J M are parallel and sides J K and L M are congruent, then the line drawn from J to L i.e JL will be equal to the line drawn from K to M i.e KM
In short the diagonal line JL will also be equal to the diagonal line KM. Since from the question we are given the length of J L to be 18 and JL = KM, hence the numerical length of KM will also be 18 units.
