What is the length of SR?
18 units
9 units
12 units
15 units

Answer:
Step-by-step explanation:
RT = sqrt(20^2 - 16^2)
RT = sqrt(400 - 256)
RT = sqrt(144)
RT = 12
SR/ST= QR/QT
SR/12 = 20/16
SR = 12 x 20 / 16
SR = 240/16
SR = 15
answer is C.
15 Units