Question

Triangle PQR is a right angled triangle at vertex R. Calculate the length of PR if PQ=34 cm and QR=33.6cm

Answer 1

Answer:

5.2 cm is the length of PR

Step-by-step explanation:

Since vertex is at R, then PQ is the hypotenuse. Therefore -

⇒  PQ² = QR² + PR²

⇒  34² = 33.6² + PR²

⇒  1156 = 1128.96 + PR²

⇒  PR² = 1156 - 1128.96

⇒  PR² = 27.04

⇒  PR = √27.04 = 5.2 cm