24 inches.
http://wiki.answers.com/Q/What_is_the_perimeter_of...

24 inches you add them up!
http://www.chacha.com/question/whatistheperimet...

That's easy, sweetheartyou can do that! To get the perimeter, you just add up all of the sides.
http://answers.yahoo.com/question/index?qid=200703...

Here, The given sides of the triangle are 6,8 and 9. We have, Perimeter of a triangle=sum of all the sides =6+8+9 =23 Now, We know that half the perimeter is called semi perimeter
http://www.webanswers.com/science/math/whatisthe...
