The area of triangle PQR PQR\,PQR is 24 cm2^22.
PQ=9PQ = 9PQ=9 cm, QR=8QR = 8QR=8 cm, and angle PQR PQR\,PQR is acute.
Find the size of angle PQRPQRPQR, giving your answer to 1 decimal place.
Find the length PRPRPR, giving your answer to 3 significant figures.