Question 711113
Area of a triangle formula is:
{{{A=(1/2)bh}}} where:
b=base
h=length of perpendicular line from vertex to the base.
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You are given b=8, so you just need h.
Since the triangle is equilateral, all angles are 60 degrees.
Since the triangle is equilateral, all sides are 8 cm.
You can find h as follows:
{{{sin(60)=h/8}}}
{{{(sqrt(3))/2=h/8}}}
{{{h=(8sqrt(3)))/2}}}
{{{h=4sqrt(3)}}}
Now that you know h, just plug it into the Area equation above to get your answer. I will leave that part to you.
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Good Luck,
tutor_paul@yahoo.com