Question

In PQR, R = P ,PR-PQ =3 cm ,the perimeter of PQR is 15 cm ,then find PR

Answer 1

Let the equal sides be x

From given information,

x- PQ = 3cm

PQ = x-3

Given, perimeter of the triangle is 15cm

x + x + x-3 = 15

3x= 18

x=6

Therefore, length of PR is 6 cm.

Hope this helps!