The perimeter of the triangle is 21 units.We need to determine the perimeter of a triangle with the following sides:→ 7 units→ 5 units→ 9 unitsTo find the perimeter of a triangle, we can use the following formula:[tex]\sf P=a+b+c[/tex], where a, b, and c are side lengths of a triangleIn other words, all we need to do is add all the sides:[tex]\sf P=7+5+9[/tex][tex]\sf P=21\; units[/tex]
Answer:The answer is 21 units.I hope this helps!