Answer:
w=14
Step-by-step explanation:
29-15=14
Answer:

Step-by-step explanation:
Draw the second altitude MB (see attached diagram).
Quadrilateral HLMB is a rectangle, then LM = HB = 3 units.
Trapezoid KLMN is isosceles trapezoid (because KL=MN), thus

Triangle LHN is right triangle, then by Pythagorean theorem,

Consider right triangle KLH. In this triangle,

So,
