Triangle S R Q is shown. Angle S R Q is a right angle. An altitude is drawn from point R to point T on side S Q to form a right angle. The length of S T is 9, the length of T Q is 16, and the length of R Q is x.
What is the value of x?

12 units
15 units
20 units (Correct)
24 units

Triangle S R Q is shown Angle S R Q is a right angle An altitude is drawn from point R to point T on side S Q to form a right angle The length of S T is 9 the l class=