Answer:
12.9cm
Explanation:
Trapeziums QRVW and QRSP are similar because they share the same side 5.5 cm and their angles are corresponding to each other.
We can express the ratios of sides in both trapeziums to find WV.
Since side 5.5 is the same in each trapezium,

Thus, WV = 12.9cm
Hope this helps:)