A right-angled triangle PQR PQR\,PQR is shown. The right angle is at vertex QQQ. The side PQ PQ\,PQ has length 11.25 cm and the hypotenuse PR PR\,PR has length 18.75 cm.
Calculate the length of the side QRQRQR.
90 exam-style questions on CCEA GCSE Maths Pythagoras. Each one has a worked solution and a mark scheme showing where the marks go.