Construct a triangle PQR with PQ equal 80cm, PQR equal 90 degrees and QR equals 9 cm measure and state the length of PR plz help asap and step by step

The answer would be 71cm because if you take 80cm which is PQ and minus 9cm which is QR you are taking away what Q is to let you get the answer of PR

A. p = 2(l + w)p/2 - l = ww = p/2 - l b. while isolating the variable w in the equation, i first divided both sides by 2 and then i subtracted l from both sides. i hope this .