SOLUTION: how to find the area of a equilateral triangle if all sides =4

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Question 303084: how to find the area of a equilateral triangle
if all sides =4
Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
how to find the area of a equilateral triangle
if all sides =4
.
Find the altitude using Pythagorean theorem:
Let h =altitude
then
h^2 + 2^2 = 4^2
h^2 + 4 = 16
h^2 = 12
h = sqrt(12)
h = 2sqrt(3)
.
Area of triangle = (1/2)bh
Area of triangle = (1/2)(4)(2)sqrt(3)
Area of triangle = 4sqrt(3)