Answer
AB=11
Work Step by Step
Perimeter of isosceles △ABC = sum of all three sides
P=AB+BC+AC
Let AB=x, so AC=x because isosceles triangle
$36.4=x+14.4+x$
$2x=36.4-14.4$
$2x= 22$
$x=11$
So AB=11
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.