If x is the length of a median of an equilateral
triangle, then its area is
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Step-by-step explanation:
Consider an equilateral triangle ABC having sides a and a median AD of length x unit'.
In an equilateral triangle, the median is always the perpendicular bisector of the triangle.
So, BD=a/2
In triangle ABD, by pythagoras theorem, we have
AB2=AD2+BD2⟹a2=x2+(2a)2⟹a2=x2+4a2⟹43a2=x2or,a2=34x2
Now, area of equilateral triangle =43a2=43×34x2=33x2
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