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Answer :

Answer:

  • 8 units

Step-by-step explanation:

Parallel lines cut the transversals into proportional segments:

  • ST / UT = SR / QR
  • ST / 16 = 18/ 36
  • ST / 16 = 1/2
  • ST = 16/2
  • ST = 8

ST be x

Apply Thales theorem

  • x/16=18/36=1/2
  • x=16/2
  • ST=8unitw

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