An equilateral triangle has a perimeter of 33 cm. What is the altitude of the triangle?

1 Answer
CountryGirl
Mar 1, 2018

Approximately 9.53

Explanation:

The formula for finding the altitude of an equilateral triangle is #(sqrt3xxs)/2# where #s = side#
Since the perimeter of the triangle is #33# and this is an equilateral triangle , we know that all 3 sides are the same length. To find #s# (the length of a side), we divide #33/3 = 11#
Let's plug #11# into the equation.
#(sqrt3xx11)/2# #rarr# #(1.7321xx11)/2# #rarr# #(19.0531)/2# #rarr# #9.52655# #~~# #9.53#

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