URGENT PLEASE HELP!!!! GIVING BRAINLIEST!! If you answer this correctly ill answer some of your questions you have posted! (29pts)

Answer:
it is right angled triangle .. so using pythagoras theorem...
QP^2 = PR^2 + QR^2
r^2 = 7.15^2+14.2^2
r^2= 51.12+201.64
r^2= 252.76
r = 15.89