if the area of equilateral triangle is 36√3 then find its perimeter
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area of an equilateral triangle = √3/4 a² where a is the side
=> √3/4 a² = 36√3
=> 4a²= 36
=> a²=9
=> a=√9
=> a=3......(i)
for side a = 3
perimeter= 3*a=9 units
=> √3/4 a² = 36√3
=> 4a²= 36
=> a²=9
=> a=√9
=> a=3......(i)
for side a = 3
perimeter= 3*a=9 units
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