A right-angled triangle PQR PQR\,PQR is shown. The right angle is at vertex QQQ. Vertex P P\,P is above QQQ, and vertex R R\,R is to the right of QQQ. The angle at vertex R R\,R is 42∘42^\circ42∘. The length of the side QR QR\,QR is 15 m.
Calculate the length of PQPQPQ. Give your answer correct to 1 decimal place.
