If the length of a median of an equilateral triangle is x cm, then its area is
Median of an equilateral = 
In an equilateral triangle median is an altitude.
Let the side of triangle be 
(AB)2 = (AD)2 + (BD)2
(
)2 = (
)2 + (
)2 C
= 
cm
Area of an equilateral triangle = 
= 
= 
= 
= 
cm2
12