Question

plz give me the answer fast​

Answer 1

9/16=(4.5)^2/(QR)^2

9/16= 20.25/(QR)^2

cross multiply

9(QR)^2=16×20.25

=324

(QR)^2=324/9

(QR)^2=36

QR=6

here is the answer mark me as brainliest