SOLUTION: What is the height of an equilateral triangle with sides that are 12 cm long? 6 cm 10.4 cm 8.5 cm 6.9 cm

Algebra ->  Triangles -> SOLUTION: What is the height of an equilateral triangle with sides that are 12 cm long? 6 cm 10.4 cm 8.5 cm 6.9 cm      Log On


   

Question 599594: What is the height of an equilateral triangle with sides that are 12 cm long?
6 cm
10.4 cm
8.5 cm
6.9 cm
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Given an equilateral triangle with side length 's', the height h is

h+=+%28s%2F2%29sqrt%283%29

In this problem, s = 12, so....

h+=+%28s%2F2%29sqrt%283%29

h+=+%2812%2F2%29sqrt%283%29

h+=+6%2Asqrt%283%29

h+=+10.3923

So the approximate answer is choice B) 10.4 cm