Question

In triangle PQR, PQ = 12 cm and QR = 9 cm. Find PR (the triangle is right angled at Q).​

Answer 1

Answer:

According to pythagoras theorem, PQ^2+QR^2= PR^2

                                                          144+81= 225=PR^2

                                                           PR = 15      

Answer 2

Answer:

15 cm is the answer

Step-by-step explanation:

We know that PR is C

a^2 + b^ 2 = c^2

12^2 + 9^2 = c^2

c^ 2 = 225

c = 25

So , PR = 25cm