Q. 165.0( 2 Votes )
The area of an eq A. 
cm
B. 
C. 
cm
D. 9 cm
Answer :
It is given in the question that,
Area of an equilateral triangle = 81
cm2
Let a be the side of the triangle and h be the height
We know that,
Area of an equilateral triangle = 
81
= 
a2 = 81 × 4
a = 18
Also, Area of triangle = 
81
h = 
h = 9
cm
Hence, option (a) is correct
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