Answer:
19.56
Explanation:
PR =
=
= 3

RQ =
=
= 5

QP =
=
= 2

Perimeter = sum of the sides = 3
+ 5
+ 2
= 19.56
Break the triangle PQR into 3 right triangles, with each leg being a hypotenuse. Then you can use the Pythagorean theorem to find the length of each leg. Add them all together to get the perimeter.