Answer:
36.
Step-by-step explanation:
Counting the squares, the length of the vertical side = 16.
The other 2 sides are of equal length and can be found by Pythagoras theorem:
The vertex of the triangle is 6 units from the longest side and the line of 6 units meets the longest side at its center ( 8 units from its ends),
so l^2 = 6^2 + 8^2
l^2 = 100
l = 10
So the perimeter is 16 + 10 + 10= 36.
