Answer:
h = 9.2cm
Step-by-step explanation:
the perimeter of an equilateral triangle P=3a, so
32cm=+3a.solve for a
32cm%2F3=+a
10.67cm=+a
Find the length of an altitude h of the triangle
Imagine, you drop the vertical + bisector from the top angle down to the bottom side in your triangle
Note that this bisector is also the altitude (height) of the triangle which equilateral triangle split in half (two right triangles)
So, by using the Pythagorean Theorem, we get that the length of the altitude.
