The formula to calculate the area of a triangle is
[tex]A=\frac{p\cdot b}{2}[/tex]
in our case we have p is the height of the triangle, and b is the base of the triangle
A=184 mm^2
b=16mm
we substitute the data given
[tex]184=\frac{p\cdot16}{2}[/tex]
then we isolate the p
[tex]p=\frac{184\cdot2}{16}[/tex][tex]p=23[/tex]
