Prove area of equilateral triangle by …
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Posted by Jai Ghosh 3 years, 5 months ago
- 2 answers
Yogita Ingle 3 years, 5 months ago
As we know the equilateral triangle have all its sides equal. To find the area of equilateral triangle let us first find the semi perimeter of the equilateral triangle will be:
s = (a+a+a)/2
s=3a/2
where a is the length of the side.
Now, as per the heron’s formula, we know;
Area=√s(s−a)(s−b)(s−c)
Since, a = b = c
Therefore,
A = √[s(s-a)3]
which is the required formula.
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Astik Dash 3 years, 5 months ago
1Thank You