Answer:
8.4
Step-by-step explanation:
Since the four horizontal lines are parallel, they each form congruent corresponding angles with the transversal line SP. Since PQ = QR = RS, that means the vertical distances between the parallel lines is equal.
Since the parallel lines are equally spaced, and form congruent angles with the transversal line TU, then TX = XZ = ZU = 2.8.
So the length of TU is 2.8 + 2.8 + 2.8 = 8.4.
